1011121220998 has 32 divisors (see below), whose sum is σ = 1750643958528. Its totient is φ = 429014988000.

The previous prime is 1011121220929. The next prime is 1011121221013. The reversal of 1011121220998 is 8990221211101.

It is a super-2 number, since 2×1011121220998² (a number of 25 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 15 ways as a sum of consecutive naturals, for example, 34694893 + ... + 34724023.

It is an arithmetic number, because the mean of its divisors is an integer number (54707623704).

Almost surely, 2^{1011121220998} is an apocalyptic number.

1011121220998 is a deficient number, since it is larger than the sum of its proper divisors (739522737530).

1011121220998 is a wasteful number, since it uses less digits than its factorization.

1011121220998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53788.

The product of its (nonzero) digits is 5184, while the sum is 37.

The spelling of 1011121220998 in words is "one trillion, eleven billion, one hundred twenty-one million, two hundred twenty thousand, nine hundred ninety-eight".