1023012233021 has 4 divisors (see below), whose sum is σ = 1023014313792. Its totient is φ = 1023010152252.

The previous prime is 1023012233017. The next prime is 1023012233029. The reversal of 1023012233021 is 1203322103201.

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.

It is a cyclic number.

It is not a de Polignac number, because 1023012233021 - 2² = 1023012233017 is a prime.

It is a super-2 number, since 2×1023012233021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1023012232984 and 1023012233002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023012233029) 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, 154646 + ... + 1438728.

It is an arithmetic number, because the mean of its divisors is an integer number (255753578448).

Almost surely, 2^{1023012233021} is an apocalyptic number.

It is an amenable number.

1023012233021 is a deficient number, since it is larger than the sum of its proper divisors (2080771).

1023012233021 is an equidigital number, since it uses as much as digits as its factorization.

1023012233021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080770.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1023012233021 its reverse (1203322103201), we get a palindrome (2226334336222).

The spelling of 1023012233021 in words is "one trillion, twenty-three billion, twelve million, two hundred thirty-three thousand, twenty-one".