20021132311103 has 32 divisors (see below), whose sum is σ = 26478584460288. Its totient is φ = 14656042022400.

The previous prime is 20021132311091. The next prime is 20021132311127. The reversal of 20021132311103 is 30111323112002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20021132311103 - 2²⁰ = 20021131262527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021132311133) 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, 13427675 + ... + 14844012.

It is an arithmetic number, because the mean of its divisors is an integer number (827455764384).

Almost surely, 2^{20021132311103} is an apocalyptic number.

20021132311103 is a deficient number, since it is larger than the sum of its proper divisors (6457452149185).

20021132311103 is a wasteful number, since it uses less digits than its factorization.

20021132311103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28272263.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20021132311103 its reverse (30111323112002), we get a palindrome (50132455423105).

The spelling of 20021132311103 in words is "twenty trillion, twenty-one billion, one hundred thirty-two million, three hundred eleven thousand, one hundred three".