63211080021 has 16 divisors (see below), whose sum is σ = 87972825600. Its totient is φ = 40296151280.

The previous prime is 63211079951. The next prime is 63211080029. The reversal of 63211080021 is 12008011236.

It is a cyclic number.

It is not a de Polignac number, because 63211080021 - 2²⁵ = 63177525589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63211079973 and 63211080000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63211080029) 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, 88786 + ... + 366476.

It is an arithmetic number, because the mean of its divisors is an integer number (5498301600).

Almost surely, 2^63211080021 is an apocalyptic number.

It is an amenable number.

63211080021 is a deficient number, since it is larger than the sum of its proper divisors (24761745579).

63211080021 is a wasteful number, since it uses less digits than its factorization.

63211080021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281016.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 63211080021 its reverse (12008011236), we get a palindrome (75219091257).

The spelling of 63211080021 in words is "sixty-three billion, two hundred eleven million, eighty thousand, twenty-one".