121002211220 has 48 divisors (see below), whose sum is σ = 277228804608. Its totient is φ = 43997036160.

The previous prime is 121002211207. The next prime is 121002211237. The reversal of 121002211220 is 22112200121.

It is a junction number, because it is equal to n+sod(n) for n = 121002211195 and 121002211204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4696694 + ... + 4722386.

It is an arithmetic number, because the mean of its divisors is an integer number (5775600096).

Almost surely, 2^121002211220 is an apocalyptic number.

121002211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121002211220 is an abundant number, since it is smaller than the sum of its proper divisors (156226593388).

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

121002211220 is a wasteful number, since it uses less digits than its factorization.

121002211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47120 (or 47118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121002211220 its reverse (22112200121), we get a palindrome (143114411341).

The spelling of 121002211220 in words is "one hundred twenty-one billion, two million, two hundred eleven thousand, two hundred twenty".