101426245521 has 4 divisors (see below), whose sum is σ = 135234994032. Its totient is φ = 67617497012.

The previous prime is 101426245517. The next prime is 101426245537. The reversal of 101426245521 is 125542624101.

It is a happy number.

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 101426245521 - 2² = 101426245517 is a prime.

It is a super-2 number, since 2×101426245521² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101426245511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16904374251 + ... + 16904374256.

It is an arithmetic number, because the mean of its divisors is an integer number (33808748508).

Almost surely, 2^101426245521 is an apocalyptic number.

It is an amenable number.

101426245521 is a deficient number, since it is larger than the sum of its proper divisors (33808748511).

101426245521 is an equidigital number, since it uses as much as digits as its factorization.

101426245521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33808748510.

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 101426245521 its reverse (125542624101), we get a palindrome (226968869622).

The spelling of 101426245521 in words is "one hundred one billion, four hundred twenty-six million, two hundred forty-five thousand, five hundred twenty-one".