20021002021010 has 64 divisors (see below), whose sum is σ = 37226472321024. Its totient is φ = 7746808896000.

The previous prime is 20021002020979. The next prime is 20021002021021. The reversal of 20021002021010 is 1012020012002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20021002020982 and 20021002021000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127198019 + ... + 127355321.

It is an arithmetic number, because the mean of its divisors is an integer number (581663630016).

Almost surely, 2^{20021002021010} is an apocalyptic number.

20021002021010 is a deficient number, since it is larger than the sum of its proper divisors (17205470300014).

20021002021010 is a wasteful number, since it uses less digits than its factorization.

20021002021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159339.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20021002021010 its reverse (1012020012002), we get a palindrome (21033022033012).

The spelling of 20021002021010 in words is "twenty trillion, twenty-one billion, two million, twenty-one thousand, ten".