121111441000 has 96 divisors (see below), whose sum is σ = 311506944840. Its totient is φ = 44040480000.

The previous prime is 121111440941. The next prime is 121111441039. The reversal of 121111441000 is 144111121.

It can be written as a sum of positive squares in 4 ways, for example, as 50049743524 + 71061697476 = 223718^2 + 266574^2 .

It is a super-2 number, since 2×121111441000² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 379461 + ... + 621460.

Almost surely, 2^121111441000 is an apocalyptic number.

121111441000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111441000 is an abundant number, since it is smaller than the sum of its proper divisors (190395503840).

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

121111441000 is a wasteful number, since it uses less digits than its factorization.

121111441000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000964 (or 1000939 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121111441000 its reverse (144111121), we get a palindrome (121255552121).

The spelling of 121111441000 in words is "one hundred twenty-one billion, one hundred eleven million, four hundred forty-one thousand".