20122023021 has 16 divisors (see below), whose sum is σ = 28412578944. Its totient is φ = 12623353344.

The previous prime is 20122022993. The next prime is 20122023029. The reversal of 20122023021 is 12032022102.

It is a happy number.

It is not a de Polignac number, because 20122023021 - 2⁶ = 20122022957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122023029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285336 + ... + 348798.

It is an arithmetic number, because the mean of its divisors is an integer number (1775786184).

Almost surely, 2^20122023021 is an apocalyptic number.

It is an amenable number.

20122023021 is a deficient number, since it is larger than the sum of its proper divisors (8290555923).

20122023021 is a wasteful number, since it uses less digits than its factorization.

20122023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69700.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20122023021 its reverse (12032022102), we get a palindrome (32154045123).

The spelling of 20122023021 in words is "twenty billion, one hundred twenty-two million, twenty-three thousand, twenty-one".