1020102121 has 8 divisors (see below), whose sum is σ = 1042622784. Its totient is φ = 997825200.

The previous prime is 1020102107. The next prime is 1020102157. The reversal of 1020102121 is 1212010201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020102121 - 2¹¹ = 1020100073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020102098 and 1020102107.

It is not an unprimeable number, because it can be changed into a prime (1020132121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52461 + ... + 69226.

It is an arithmetic number, because the mean of its divisors is an integer number (130327848).

Almost surely, 2^1020102121 is an apocalyptic number.

It is an amenable number.

1020102121 is a deficient number, since it is larger than the sum of its proper divisors (22520663).

1020102121 is a wasteful number, since it uses less digits than its factorization.

1020102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121871.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1020102121 is about 31939.0375715988. The cubic root of 1020102121 is about 1006.6563023337.

Adding to 1020102121 its reverse (1212010201), we get a palindrome (2232112322).

The spelling of 1020102121 in words is "one billion, twenty million, one hundred two thousand, one hundred twenty-one".