121221022001010 has 32 divisors (see below), whose sum is σ = 290930754732480. Its totient is φ = 32325572319168.

The previous prime is 121221022000951. The next prime is 121221022001021. The reversal of 121221022001010 is 10100220122121.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 43665861 + ... + 46358919.

It is an arithmetic number, because the mean of its divisors is an integer number (9091586085390).

Almost surely, 2^{121221022001010} is an apocalyptic number.

121221022001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121221022001010 is an abundant number, since it is smaller than the sum of its proper divisors (169709732731470).

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

121221022001010 is a wasteful number, since it uses less digits than its factorization.

121221022001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193482.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121221022001010 its reverse (10100220122121), we get a palindrome (131321242123131).

The spelling of 121221022001010 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-two million, one thousand, ten".