121002220101 has 64 divisors (see below), whose sum is σ = 205398305280. Its totient is φ = 61773373440.

The previous prime is 121002220069. The next prime is 121002220103. The reversal of 121002220101 is 101022200121.

It is not a de Polignac number, because 121002220101 - 2⁵ = 121002220069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002220103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 429855 + ... + 653283.

It is an arithmetic number, because the mean of its divisors is an integer number (3209348520).

Almost surely, 2^121002220101 is an apocalyptic number.

It is an amenable number.

121002220101 is a deficient number, since it is larger than the sum of its proper divisors (84396085179).

121002220101 is a wasteful number, since it uses less digits than its factorization.

121002220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223534.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121002220101 its reverse (101022200121), we get a palindrome (222024420222).

The spelling of 121002220101 in words is "one hundred twenty-one billion, two million, two hundred twenty thousand, one hundred one".