101221099926 has 16 divisors (see below), whose sum is σ = 203025610944. Its totient is φ = 33643131464.

The previous prime is 101221099919. The next prime is 101221099927. The reversal of 101221099926 is 629990122101.

It is a super-2 number, since 2×101221099926² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221099927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24306540 + ... + 24310703.

It is an arithmetic number, because the mean of its divisors is an integer number (12689100684).

Almost surely, 2^101221099926 is an apocalyptic number.

101221099926 is an abundant number, since it is smaller than the sum of its proper divisors (101804511018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101221099926 is a wasteful number, since it uses less digits than its factorization.

101221099926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48617595.

The product of its (nonzero) digits is 34992, while the sum is 42.

The spelling of 101221099926 in words is "one hundred one billion, two hundred twenty-one million, ninety-nine thousand, nine hundred twenty-six".