20011012121010 has 32 divisors (see below), whose sum is σ = 48332329924032. Its totient is φ = 5302280917440.

The previous prime is 20011012120973. The next prime is 20011012121029. The reversal of 20011012121010 is 1012121011002.

It is a super-2 number, since 2×20011012121010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2124306556 + ... + 2124315975.

It is an arithmetic number, because the mean of its divisors is an integer number (1510385310126).

Almost surely, 2^{20011012121010} is an apocalyptic number.

20011012121010 is an abundant number, since it is smaller than the sum of its proper divisors (28321317803022).

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

20011012121010 is a wasteful number, since it uses less digits than its factorization.

20011012121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4248622698.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20011012121010 its reverse (1012121011002), we get a palindrome (21023133132012).

The spelling of 20011012121010 in words is "twenty trillion, eleven billion, twelve million, one hundred twenty-one thousand, ten".