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120213101987 = 1133157435749
BaseRepresentation
bin110111111110101000…
…0100101110110100011
3102111021212011022110122
41233331100211312203
53432144023230422
6131120343550455
711453664335666
oct1577520456643
9374255138418
10120213101987
1146a89186870
121b36b15b42b
13b44a3ab114
145b657796dd
1531d8a4bd42
hex1bfd425da3

120213101987 has 16 divisors (see below), whose sum is σ = 131583552000. Its totient is φ = 108916552800.

The previous prime is 120213101947. The next prime is 120213101999. The reversal of 120213101987 is 789101312021.

It is not a de Polignac number, because 120213101987 - 26 = 120213101923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120213101947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20907389 + ... + 20913137.

It is an arithmetic number, because the mean of its divisors is an integer number (8223972000).

Almost surely, 2120213101987 is an apocalyptic number.

120213101987 is a deficient number, since it is larger than the sum of its proper divisors (11370450013).

120213101987 is a wasteful number, since it uses less digits than its factorization.

120213101987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11834.

The product of its (nonzero) digits is 6048, while the sum is 35.

The spelling of 120213101987 in words is "one hundred twenty billion, two hundred thirteen million, one hundred one thousand, nine hundred eighty-seven".

Divisors: 1 11 331 3641 5743 5749 63173 63239 1900933 1902919 20910263 20932109 33016507 363181577 10928463817 120213101987