21010102022 has 32 divisors (see below), whose sum is σ = 39423768384. Its totient is φ = 8175427200.

The previous prime is 21010102021. The next prime is 21010102039. The reversal of 21010102022 is 22020101012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21010101994 and 21010102012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010102021) 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, 935129 + ... + 957332.

It is an arithmetic number, because the mean of its divisors is an integer number (1231992762).

Almost surely, 2^21010102022 is an apocalyptic number.

21010102022 is a deficient number, since it is larger than the sum of its proper divisors (18413666362).

21010102022 is a wasteful number, since it uses less digits than its factorization.

21010102022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892544.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21010102022 its reverse (22020101012), we get a palindrome (43030203034).

The spelling of 21010102022 in words is "twenty-one billion, ten million, one hundred two thousand, twenty-two".