20021001121102 has 32 divisors (see below), whose sum is σ = 31984983060480. Its totient is φ = 9384482633760.

The previous prime is 20021001121063. The next prime is 20021001121103. The reversal of 20021001121102 is 20112110012002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021001121103) 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, 38302548 + ... + 38821735.

It is an arithmetic number, because the mean of its divisors is an integer number (999530720640).

Almost surely, 2^{20021001121102} is an apocalyptic number.

20021001121102 is a deficient number, since it is larger than the sum of its proper divisors (11963981939378).

20021001121102 is a wasteful number, since it uses less digits than its factorization.

20021001121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77124448.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20021001121102 its reverse (20112110012002), we get a palindrome (40133111133104).

The spelling of 20021001121102 in words is "twenty trillion, twenty-one billion, one million, one hundred twenty-one thousand, one hundred two".