101220900529 has 4 divisors (see below), whose sum is σ = 115681029184. Its totient is φ = 86760771876.

The previous prime is 101220900511. The next prime is 101220900551. The reversal of 101220900529 is 925009022101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101220900529 - 2¹⁹ = 101220376241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101220900529.

It is not an unprimeable number, because it can be changed into a prime (101220900929) 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, 7230064317 + ... + 7230064330.

It is an arithmetic number, because the mean of its divisors is an integer number (28920257296).

Almost surely, 2^101220900529 is an apocalyptic number.

It is an amenable number.

101220900529 is a deficient number, since it is larger than the sum of its proper divisors (14460128655).

101220900529 is an equidigital number, since it uses as much as digits as its factorization.

101220900529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14460128654.

The product of its (nonzero) digits is 3240, while the sum is 31.

The spelling of 101220900529 in words is "one hundred one billion, two hundred twenty million, nine hundred thousand, five hundred twenty-nine".