101426220551 has 4 divisors (see below), whose sum is σ = 101430244272. Its totient is φ = 101422196832.

The previous prime is 101426220517. The next prime is 101426220589. The reversal of 101426220551 is 155022624101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155022624101 = 19 ⋅8159085479.

It is a cyclic number.

It is not a de Polignac number, because 101426220551 - 2¹⁸ = 101425958407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101426222551) 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, 1973810 + ... + 2024543.

It is an arithmetic number, because the mean of its divisors is an integer number (25357561068).

Almost surely, 2^101426220551 is an apocalyptic number.

101426220551 is a deficient number, since it is larger than the sum of its proper divisors (4023721).

101426220551 is an equidigital number, since it uses as much as digits as its factorization.

101426220551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4023720.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 101426220551 its reverse (155022624101), we get a palindrome (256448844652).

The spelling of 101426220551 in words is "one hundred one billion, four hundred twenty-six million, two hundred twenty thousand, five hundred fifty-one".