20002111121010 has 64 divisors (see below), whose sum is σ = 49667395190400. Its totient is φ = 5149244846592.

The previous prime is 20002111121009. The next prime is 20002111121011. The reversal of 20002111121010 is 1012111120002.

It is an interprime number because it is at equal distance from previous prime (20002111121009) and next prime (20002111121011).

It is not an unprimeable number, because it can be changed into a prime (20002111121011) 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, 4589737 + ... + 7814723.

It is an arithmetic number, because the mean of its divisors is an integer number (776053049850).

Almost surely, 2^{20002111121010} is an apocalyptic number.

20002111121010 is an abundant number, since it is smaller than the sum of its proper divisors (29665284069390).

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

20002111121010 is a wasteful number, since it uses less digits than its factorization.

20002111121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232155.

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

Adding to 20002111121010 its reverse (1012111120002), we get a palindrome (21014222241012).

The spelling of 20002111121010 in words is "twenty trillion, two billion, one hundred eleven million, one hundred twenty-one thousand, ten".