21100121122010 has 16 divisors (see below), whose sum is σ = 43405963451136. Its totient is φ = 7234327241808.

The previous prime is 21100121121997. The next prime is 21100121122037. The reversal of 21100121122010 is 1022112100112.

It is a super-2 number, since 2×21100121122010² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 150715150802 + ... + 150715150941.

It is an arithmetic number, because the mean of its divisors is an integer number (2712872715696).

Almost surely, 2^{21100121122010} is an apocalyptic number.

21100121122010 is an abundant number, since it is smaller than the sum of its proper divisors (22305842329126).

21100121122010 is a wasteful number, since it uses less digits than its factorization.

21100121122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301430301757.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21100121122010 its reverse (1022112100112), we get a palindrome (22122233222122).

The spelling of 21100121122010 in words is "twenty-one trillion, one hundred billion, one hundred twenty-one million, one hundred twenty-two thousand, ten".