10101221133231 has 4 divisors (see below), whose sum is σ = 13468294844312. Its totient is φ = 6734147422152.

The previous prime is 10101221133229. The next prime is 10101221133233. The reversal of 10101221133231 is 13233112210101.

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

It is an interprime number because it is at equal distance from previous prime (10101221133229) and next prime (10101221133233).

It is not a de Polignac number, because 10101221133231 - 2¹ = 10101221133229 is a prime.

It is a super-2 number, since 2×10101221133231² (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 = 10101221133198 and 10101221133207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101221133233) 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, 1683536855536 + ... + 1683536855541.

It is an arithmetic number, because the mean of its divisors is an integer number (3367073711078).

Almost surely, 2^{10101221133231} is an apocalyptic number.

10101221133231 is a deficient number, since it is larger than the sum of its proper divisors (3367073711081).

10101221133231 is an equidigital number, since it uses as much as digits as its factorization.

10101221133231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367073711080.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 10101221133231 its reverse (13233112210101), we get a palindrome (23334333343332).

The spelling of 10101221133231 in words is "ten trillion, one hundred one billion, two hundred twenty-one million, one hundred thirty-three thousand, two hundred thirty-one".