101221000121 has 32 divisors (see below), whose sum is σ = 112098940800. Its totient is φ = 91040785920.

The previous prime is 101221000117. The next prime is 101221000163. The reversal of 101221000121 is 121000122101.

It is a cyclic number.

It is not a de Polignac number, because 101221000121 - 2² = 101221000117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101221000421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9273215 + ... + 9284123.

It is an arithmetic number, because the mean of its divisors is an integer number (3503091900).

Almost surely, 2^101221000121 is an apocalyptic number.

It is an amenable number.

101221000121 is a deficient number, since it is larger than the sum of its proper divisors (10877940679).

101221000121 is a wasteful number, since it uses less digits than its factorization.

101221000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11289.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101221000121 its reverse (121000122101), we get a palindrome (222221122222).

The spelling of 101221000121 in words is "one hundred one billion, two hundred twenty-one million, one hundred twenty-one", and thus it is an aban number.