121151020 has 12 divisors (see below), whose sum is σ = 254417184. Its totient is φ = 48460400.

The previous prime is 121150979. The next prime is 121151021. The reversal of 121151020 is 20151121.

It is not an unprimeable number, because it can be changed into a prime (121151021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3028756 + ... + 3028795.

It is an arithmetic number, because the mean of its divisors is an integer number (21201432).

Almost surely, 2^121151020 is an apocalyptic number.

121151020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121151020 is an abundant number, since it is smaller than the sum of its proper divisors (133266164).

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

121151020 is a wasteful number, since it uses less digits than its factorization.

121151020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6057560 (or 6057558 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 121151020 is about 11006.8624048818. The cubic root of 121151020 is about 494.8144323639.

The spelling of 121151020 in words is "one hundred twenty-one million, one hundred fifty-one thousand, twenty".