20211321020131 has 8 divisors (see below), whose sum is σ = 20758996122624. Its totient is φ = 19663720822080.

The previous prime is 20211321020123. The next prime is 20211321020153. The reversal of 20211321020131 is 13102012311202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20211321020131 - 2³ = 20211321020123 is a prime.

It is a super-2 number, since 2×20211321020131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211321020099 and 20211321020108.

It is not an unprimeable number, because it can be changed into a prime (20211321020171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18178930 + ... + 19258663.

It is an arithmetic number, because the mean of its divisors is an integer number (2594874515328).

Almost surely, 2^{20211321020131} is an apocalyptic number.

20211321020131 is a deficient number, since it is larger than the sum of its proper divisors (547675102493).

20211321020131 is a wasteful number, since it uses less digits than its factorization.

20211321020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37452221.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20211321020131 its reverse (13102012311202), we get a palindrome (33313333331333).

The spelling of 20211321020131 in words is "twenty trillion, two hundred eleven billion, three hundred twenty-one million, twenty thousand, one hundred thirty-one".