10011121000 has 32 divisors (see below), whose sum is σ = 23426025480. Its totient is φ = 4004448000.

The previous prime is 10011120991. The next prime is 10011121019. The reversal of 10011121000 is 12111001.

It can be written as a sum of positive squares in 4 ways, for example, as 6723016036 + 3288104964 = 81994^2 + 57342^2 .

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, 5004561 + ... + 5006560.

Almost surely, 2^10011121000 is an apocalyptic number.

10011121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10011121000 is an abundant number, since it is smaller than the sum of its proper divisors (13414904480).

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

10011121000 is a wasteful number, since it uses less digits than its factorization.

10011121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011142 (or 10011128 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 10011121000 its reverse (12111001), we get a palindrome (10023232001).

Subtracting from 10011121000 its reverse (12111001), we obtain a palindrome (9999009999).

The spelling of 10011121000 in words is "ten billion, eleven million, one hundred twenty-one thousand".