20021000011010 has 32 divisors (see below), whose sum is σ = 36056555263872. Its totient is φ = 8004232978560.

The previous prime is 20021000010929. The next prime is 20021000011013. The reversal of 20021000011010 is 1011000012002.

It is not an unprimeable number, because it can be changed into a prime (20021000011013) 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, 223996589 + ... + 224085951.

It is an arithmetic number, because the mean of its divisors is an integer number (1126767351996).

Almost surely, 2^{20021000011010} is an apocalyptic number.

20021000011010 is a deficient number, since it is larger than the sum of its proper divisors (16035555252862).

20021000011010 is a wasteful number, since it uses less digits than its factorization.

20021000011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100778.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20021000011010 its reverse (1011000012002), we get a palindrome (21032000023012).

The spelling of 20021000011010 in words is "twenty trillion, twenty-one billion, eleven thousand, ten".