1020610121 has 4 divisors (see below), whose sum is σ = 1025187072. Its totient is φ = 1016033172.

The previous prime is 1020610103. The next prime is 1020610139. The reversal of 1020610121 is 1210160201.

1020610121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1210160201 = 73 ⋅16577537.

It is an interprime number because it is at equal distance from previous prime (1020610103) and next prime (1020610139).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020610121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020610096 and 1020610105.

It is not an unprimeable number, because it can be changed into a prime (1020670121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2288141 + ... + 2288586.

It is an arithmetic number, because the mean of its divisors is an integer number (256296768).

Almost surely, 2^1020610121 is an apocalyptic number.

It is an amenable number.

1020610121 is a deficient number, since it is larger than the sum of its proper divisors (4576951).

1020610121 is an equidigital number, since it uses as much as digits as its factorization.

1020610121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576950.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1020610121 is about 31946.9892321640. The cubic root of 1020610121 is about 1006.8233759783.

Adding to 1020610121 its reverse (1210160201), we get a palindrome (2230770322).

The spelling of 1020610121 in words is "one billion, twenty million, six hundred ten thousand, one hundred twenty-one".