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121083851 = 7216714797
BaseRepresentation
bin1110011011110…
…01011111001011
322102211200211002
413031321133023
5221444140401
620003125215
73000124100
oct715713713
9272750732
10121083851
11623920a9
123467380b
131c116365
141211caa7
15a96ba6b
hex73797cb

121083851 has 12 divisors (see below), whose sum is σ = 141705648. Its totient is φ = 103157712.

The previous prime is 121083821. The next prime is 121083901. The reversal of 121083851 is 158380121.

It is not a de Polignac number, because 121083851 - 218 = 120821707 is a prime.

It is a super-2 number, since 2×1210838512 = 29322597945980402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121083811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 785 + ... + 15581.

It is an arithmetic number, because the mean of its divisors is an integer number (11808804).

Almost surely, 2121083851 is an apocalyptic number.

121083851 is a deficient number, since it is larger than the sum of its proper divisors (20621797).

121083851 is a wasteful number, since it uses less digits than its factorization.

121083851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14978 (or 14971 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 121083851 is about 11003.8107490087. The cubic root of 121083851 is about 494.7229698383.

The spelling of 121083851 in words is "one hundred twenty-one million, eighty-three thousand, eight hundred fifty-one".

Divisors: 1 7 49 167 1169 8183 14797 103579 725053 2471099 17297693 121083851