21112020001074 has 32 divisors (see below), whose sum is σ = 42253626075840. Its totient is φ = 7032410705600.

The previous prime is 21112020001073. The next prime is 21112020001159. The reversal of 21112020001074 is 47010002021112.

It is a super-2 number, since 2×21112020001074² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21112020001074.

It is not an unprimeable number, because it can be changed into a prime (21112020001073) 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, 49629964 + ... + 50053544.

It is an arithmetic number, because the mean of its divisors is an integer number (1320425814870).

Almost surely, 2^{21112020001074} is an apocalyptic number.

21112020001074 is an abundant number, since it is smaller than the sum of its proper divisors (21141606074766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21112020001074 is a wasteful number, since it uses less digits than its factorization.

21112020001074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429386.

The product of its (nonzero) digits is 224, while the sum is 21.

Adding to 21112020001074 its reverse (47010002021112), we get a palindrome (68122022022186).

The spelling of 21112020001074 in words is "twenty-one trillion, one hundred twelve billion, twenty million, one thousand, seventy-four".