100020211231 has 4 divisors (see below), whose sum is σ = 100033419312. Its totient is φ = 100007003152.

The previous prime is 100020211183. The next prime is 100020211283. The reversal of 100020211231 is 132112020001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100020211231 - 2¹³ = 100020203039 is a prime.

It is a super-2 number, since 2×100020211231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020211831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6592675 + ... + 6607828.

It is an arithmetic number, because the mean of its divisors is an integer number (25008354828).

Almost surely, 2^100020211231 is an apocalyptic number.

100020211231 is a deficient number, since it is larger than the sum of its proper divisors (13208081).

100020211231 is an equidigital number, since it uses as much as digits as its factorization.

100020211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13208080.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 100020211231 its reverse (132112020001), we get a palindrome (232132231232).

The spelling of 100020211231 in words is "one hundred billion, twenty million, two hundred eleven thousand, two hundred thirty-one".