101021012231 has 4 divisors (see below), whose sum is σ = 101197932264. Its totient is φ = 100844092200.

The previous prime is 101021012227. The next prime is 101021012237. The reversal of 101021012231 is 132210120101.

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 101021012231 - 2² = 101021012227 is a prime.

It is a super-2 number, since 2×101021012231² (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 (101021012237) 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, 88459160 + ... + 88460301.

It is an arithmetic number, because the mean of its divisors is an integer number (25299483066).

Almost surely, 2^101021012231 is an apocalyptic number.

101021012231 is a deficient number, since it is larger than the sum of its proper divisors (176920033).

101021012231 is an equidigital number, since it uses as much as digits as its factorization.

101021012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176920032.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 101021012231 its reverse (132210120101), we get a palindrome (233231132332).

The spelling of 101021012231 in words is "one hundred one billion, twenty-one million, twelve thousand, two hundred thirty-one".