121220000101 has 4 divisors (see below), whose sum is σ = 126490434912. Its totient is φ = 115949565292.

The previous prime is 121220000059. The next prime is 121220000123. The reversal of 121220000101 is 101000022121.

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 121220000101 - 2²⁷ = 121085782373 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 (121220010101) 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, 2635217371 + ... + 2635217416.

It is an arithmetic number, because the mean of its divisors is an integer number (31622608728).

Almost surely, 2^121220000101 is an apocalyptic number.

It is an amenable number.

121220000101 is a deficient number, since it is larger than the sum of its proper divisors (5270434811).

121220000101 is an equidigital number, since it uses as much as digits as its factorization.

121220000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270434810.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121220000101 its reverse (101000022121), we get a palindrome (222220022222).

The spelling of 121220000101 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred one", and thus it is an aban number.