121012120020220 has 96 divisors (see below), whose sum is σ = 298769174456256. Its totient is φ = 40590038476800.

The previous prime is 121012120020199. The next prime is 121012120020223. The reversal of 121012120020220 is 22020021210121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121012120020194 and 121012120020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012120020223) 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, 11369649 + ... + 19268968.

It is an arithmetic number, because the mean of its divisors is an integer number (3112178900586).

Almost surely, 2^{121012120020220} is an apocalyptic number.

121012120020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012120020220 is an abundant number, since it is smaller than the sum of its proper divisors (177757054436036).

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

121012120020220 is a wasteful number, since it uses less digits than its factorization.

121012120020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30640031 (or 30640029 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121012120020220 its reverse (22020021210121), we get a palindrome (143032141230341).

The spelling of 121012120020220 in words is "one hundred twenty-one trillion, twelve billion, one hundred twenty million, twenty thousand, two hundred twenty".