20011200121010 has 32 divisors (see below), whose sum is σ = 41187876250752. Its totient is φ = 6857319755520.

The previous prime is 20011200120991. The next prime is 20011200121093. The reversal of 20011200121010 is 1012100211002.

It is a super-2 number, since 2×20011200121010² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20011200120982 and 20011200121000.

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, 76183436 + ... + 76445655.

It is an arithmetic number, because the mean of its divisors is an integer number (1287121132836).

Almost surely, 2^{20011200121010} is an apocalyptic number.

20011200121010 is an abundant number, since it is smaller than the sum of its proper divisors (21176676129742).

20011200121010 is a wasteful number, since it uses less digits than its factorization.

20011200121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152630978.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20011200121010 its reverse (1012100211002), we get a palindrome (21023300332012).

The spelling of 20011200121010 in words is "twenty trillion, eleven billion, two hundred million, one hundred twenty-one thousand, ten".