121023111012220 has 24 divisors (see below), whose sum is σ = 260347277837808. Its totient is φ = 47228531126400.

The previous prime is 121023111012191. The next prime is 121023111012247. The reversal of 121023111012220 is 22210111320121.

It is a super-2 number, since 2×121023111012220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73794579066 + ... + 73794580705.

It is an arithmetic number, because the mean of its divisors is an integer number (10847803243242).

Almost surely, 2^{121023111012220} is an apocalyptic number.

121023111012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121023111012220 is an abundant number, since it is smaller than the sum of its proper divisors (139324166825588).

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

121023111012220 is a wasteful number, since it uses less digits than its factorization.

121023111012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147589159821 (or 147589159819 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 121023111012220 its reverse (22210111320121), we get a palindrome (143233222332341).

The spelling of 121023111012220 in words is "one hundred twenty-one trillion, twenty-three billion, one hundred eleven million, twelve thousand, two hundred twenty".