1010121023 has 4 divisors (see below), whose sum is σ = 1010377368. Its totient is φ = 1009864680.

The previous prime is 1010120989. The next prime is 1010121037. The reversal of 1010121023 is 3201210101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1010121023 - 2¹⁸ = 1009858879 is a prime.

It is a super-2 number, since 2×1010121023² = 2040688962213133058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010120995 and 1010121013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010124023) 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, 122168 + ... + 130173.

It is an arithmetic number, because the mean of its divisors is an integer number (252594342).

Almost surely, 2^1010121023 is an apocalyptic number.

1010121023 is a deficient number, since it is larger than the sum of its proper divisors (256345).

1010121023 is an equidigital number, since it uses as much as digits as its factorization.

1010121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256344.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1010121023 is about 31782.4011522100. The cubic root of 1010121023 is about 1003.3623562230.

Adding to 1010121023 its reverse (3201210101), we get a palindrome (4211331124).

The spelling of 1010121023 in words is "one billion, ten million, one hundred twenty-one thousand, twenty-three".