22012121023 has 8 divisors (see below), whose sum is σ = 22752182160. Its totient is φ = 21284292480.

The previous prime is 22012121017. The next prime is 22012121029. The reversal of 22012121023 is 32012121022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22012121017) and next prime (22012121029).

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

It is not a de Polignac number, because 22012121023 - 2²⁵ = 21978566591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22012120988 and 22012121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012121029) 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, 3054490 + ... + 3061687.

It is an arithmetic number, because the mean of its divisors is an integer number (2844022770).

Almost surely, 2^22012121023 is an apocalyptic number.

22012121023 is a deficient number, since it is larger than the sum of its proper divisors (740061137).

22012121023 is an equidigital number, since it uses as much as digits as its factorization.

22012121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6116297.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22012121023 its reverse (32012121022), we get a palindrome (54024242045).

Subtracting 22012121023 from its reverse (32012121022), we obtain a palindrome (9999999999).

The spelling of 22012121023 in words is "twenty-two billion, twelve million, one hundred twenty-one thousand, twenty-three".