121002010012221 has 16 divisors (see below), whose sum is σ = 173815123419840. Its totient is φ = 74433355032960.

The previous prime is 121002010012171. The next prime is 121002010012237. The reversal of 121002010012221 is 122210010200121.

It is not a de Polignac number, because 121002010012221 - 2¹⁷ = 121002009881149 is a prime.

It is a super-2 number, since 2×121002010012221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121002010012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002010011221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612824176 + ... + 613021593.

It is an arithmetic number, because the mean of its divisors is an integer number (10863445213740).

Almost surely, 2^{121002010012221} is an apocalyptic number.

It is an amenable number.

121002010012221 is a deficient number, since it is larger than the sum of its proper divisors (52813113407619).

121002010012221 is a wasteful number, since it uses less digits than its factorization.

121002010012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225848316.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121002010012221 its reverse (122210010200121), we get a palindrome (243212020212342).

The spelling of 121002010012221 in words is "one hundred twenty-one trillion, two billion, ten million, twelve thousand, two hundred twenty-one".