121021110012220 has 48 divisors (see below), whose sum is σ = 277249108858848. Its totient is φ = 44007557679360.

The previous prime is 121021110012193. The next prime is 121021110012247. The reversal of 121021110012220 is 22210011120121.

It is an interprime number because it is at equal distance from previous prime (121021110012193) and next prime (121021110012247).

It is a super-2 number, since 2×121021110012220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121021110012194 and 121021110012203.

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, 159878554 + ... + 160633726.

It is an arithmetic number, because the mean of its divisors is an integer number (5776023101226).

Almost surely, 2^{121021110012220} is an apocalyptic number.

121021110012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021110012220 is an abundant number, since it is smaller than the sum of its proper divisors (156227998846628).

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

121021110012220 is a wasteful number, since it uses less digits than its factorization.

121021110012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483630 (or 1483628 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121021110012220 its reverse (22210011120121), we get a palindrome (143231121132341).

The spelling of 121021110012220 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred ten million, twelve thousand, two hundred twenty".