1001121099980 has 24 divisors (see below), whose sum is σ = 2102475569712. Its totient is φ = 400425342912.

The previous prime is 1001121099977. The next prime is 1001121100003. The reversal of 1001121099980 is 899901211001.

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, 1085987 + ... + 1783706.

It is an arithmetic number, because the mean of its divisors is an integer number (87603148738).

Almost surely, 2^{1001121099980} is an apocalyptic number.

1001121099980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001121099980 is an abundant number, since it is smaller than the sum of its proper divisors (1101354469732).

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

1001121099980 is a wasteful number, since it uses less digits than its factorization.

1001121099980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887145 (or 2887143 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 41.

The spelling of 1001121099980 in words is "one trillion, one billion, one hundred twenty-one million, ninety-nine thousand, nine hundred eighty".