21121000001120 has 24 divisors (see below), whose sum is σ = 49898362503024. Its totient is φ = 8448400000384.

The previous prime is 21121000001119. The next prime is 21121000001161. The reversal of 21121000001120 is 2110000012112.

It is a super-2 number, since 2×21121000001120² (a number of 27 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 3 ways as a sum of consecutive naturals, for example, 66003124844 + ... + 66003125163.

It is an arithmetic number, because the mean of its divisors is an integer number (2079098437626).

Almost surely, 2^{21121000001120} is an apocalyptic number.

21121000001120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21121000001120 is an abundant number, since it is smaller than the sum of its proper divisors (28777362501904).

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

21121000001120 is a wasteful number, since it uses less digits than its factorization.

21121000001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132006250022 (or 132006250014 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21121000001120 its reverse (2110000012112), we get a palindrome (23231000013232).

The spelling of 21121000001120 in words is "twenty-one trillion, one hundred twenty-one billion, one thousand, one hundred twenty".