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202101299980 = 22510105064999
BaseRepresentation
bin1011110000111000101…
…1010001101100001100
3201022122210020210011121
42330032023101230030
511302400413044410
6232502152130324
720413154464006
oct2741613215414
9638583223147
10202101299980
117878aa07a58
12332033969a4
131609a773948
149ad31c9376
1553ccb969da
hex2f0e2d1b0c

202101299980 has 12 divisors (see below), whose sum is σ = 424412730000. Its totient is φ = 80840519984.

The previous prime is 202101299957. The next prime is 202101299987. The reversal of 202101299980 is 89992101202.

It is not an unprimeable number, because it can be changed into a prime (202101299987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5052532480 + ... + 5052532519.

It is an arithmetic number, because the mean of its divisors is an integer number (35367727500).

Almost surely, 2202101299980 is an apocalyptic number.

202101299980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202101299980 is an abundant number, since it is smaller than the sum of its proper divisors (222311430020).

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

202101299980 is a wasteful number, since it uses less digits than its factorization.

202101299980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10105065008 (or 10105065006 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 202101299980 in words is "two hundred two billion, one hundred one million, two hundred ninety-nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 10105064999 20210129998 40420259996 50525324995 101050649990 202101299980