1120121000 has 32 divisors (see below), whose sum is σ = 2621085480. Its totient is φ = 448048000.

The previous prime is 1120120997. The next prime is 1120121011. The reversal of 1120121000 is 1210211.

It can be written as a sum of positive squares in 4 ways, for example, as 78251716 + 1041869284 = 8846^2 + 32278^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

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, 559061 + ... + 561060.

Almost surely, 2^1120121000 is an apocalyptic number.

1120121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120121000 is an abundant number, since it is smaller than the sum of its proper divisors (1500964480).

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

1120121000 is a wasteful number, since it uses less digits than its factorization.

1120121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120142 (or 1120128 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1120121000 is about 33468.2087958110. The cubic root of 1120121000 is about 1038.5362173441.

Adding to 1120121000 its reverse (1210211), we get a palindrome (1121331211).

The spelling of 1120121000 in words is "one billion, one hundred twenty million, one hundred twenty-one thousand".