21101102121022 has 64 divisors (see below), whose sum is σ = 41086978265088. Its totient is φ = 7889204448000.

The previous prime is 21101102120993. The next prime is 21101102121023. The reversal of 21101102121022 is 22012120110112.

It is a junction number, because it is equal to n+sod(n) for n = 21101102120987 and 21101102121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101102121023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27007918 + ... + 27778225.

It is an arithmetic number, because the mean of its divisors is an integer number (641984035392).

Almost surely, 2^{21101102121022} is an apocalyptic number.

21101102121022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21101102121022 is a deficient number, since it is larger than the sum of its proper divisors (19985876144066).

21101102121022 is a wasteful number, since it uses less digits than its factorization.

21101102121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54786265.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21101102121022 its reverse (22012120110112), we get a palindrome (43113222231134).

The spelling of 21101102121022 in words is "twenty-one trillion, one hundred one billion, one hundred two million, one hundred twenty-one thousand, twenty-two".