21020100022022 has 16 divisors (see below), whose sum is σ = 32387614234272. Its totient is φ = 10224321557760.

The previous prime is 21020100022001. The next prime is 21020100022093. The reversal of 21020100022022 is 22022000102012.

It is a junction number, because it is equal to n+sod(n) for n = 21020100021988 and 21020100022006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22781354 + ... + 23686077.

It is an arithmetic number, because the mean of its divisors is an integer number (2024225889642).

Almost surely, 2^{21020100022022} is an apocalyptic number.

21020100022022 is a deficient number, since it is larger than the sum of its proper divisors (11367514212250).

21020100022022 is a wasteful number, since it uses less digits than its factorization.

21020100022022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46473583.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21020100022022 its reverse (22022000102012), we get a palindrome (43042100124034).

The spelling of 21020100022022 in words is "twenty-one trillion, twenty billion, one hundred million, twenty-two thousand, twenty-two".