20021121011010 has 32 divisors (see below), whose sum is σ = 54915074773632. Its totient is φ = 4576256231040.

The previous prime is 20021121010981. The next prime is 20021121011011. The reversal of 20021121011010 is 1011012112002.

20021121011010 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (20021121011011) 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, 47669335531 + ... + 47669335950.

It is an arithmetic number, because the mean of its divisors is an integer number (1716096086676).

Almost surely, 2^{20021121011010} is an apocalyptic number.

20021121011010 is an abundant number, since it is smaller than the sum of its proper divisors (34893953762622).

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

20021121011010 is a wasteful number, since it uses less digits than its factorization.

20021121011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95338671498.

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

Adding to 20021121011010 its reverse (1011012112002), we get a palindrome (21032133123012).

The spelling of 20021121011010 in words is "twenty trillion, twenty-one billion, one hundred twenty-one million, eleven thousand, ten".