1101220998 has 64 divisors (see below), whose sum is σ = 2346319872. Its totient is φ = 344017440.

The previous prime is 1101220993. The next prime is 1101220999. The reversal of 1101220998 is 8990221011.

It is a super-2 number, since 2×1101220998² = 2425375372872232008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101220993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 899815 + ... + 901037.

It is an arithmetic number, because the mean of its divisors is an integer number (36661248).

Almost surely, 2^1101220998 is an apocalyptic number.

1101220998 is an abundant number, since it is smaller than the sum of its proper divisors (1245098874).

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

1101220998 is a wasteful number, since it uses less digits than its factorization.

1101220998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 1101220998 is about 33184.6500358223. The cubic root of 1101220998 is about 1032.6619172419.

The spelling of 1101220998 in words is "one billion, one hundred one million, two hundred twenty thousand, nine hundred ninety-eight".