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1222101001992 = 23313194119326053
BaseRepresentation
bin10001110010001010111…
…001010110011100001000
311022211110022122100010210
4101302022321112130020
5130010330324030432
62333231521441120
7154202542056123
oct21621271263410
94284408570123
101222101001992
11431321178aa2
12178a271a01a0
138b322341590
144321587b3ba
1521bca11a8cc
hex11c8ae56708

1222101001992 has 256 divisors, whose sum is σ = 3566438265600. Its totient is φ = 345737134080.

The previous prime is 1222101001987. The next prime is 1222101002009. The reversal of 1222101001992 is 2991001012221.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46895238 + ... + 46921290.

It is an arithmetic number, because the mean of its divisors is an integer number (13931399475).

Almost surely, 21222101001992 is an apocalyptic number.

1222101001992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222101001992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1783219132800).

1222101001992 is an abundant number, since it is smaller than the sum of its proper divisors (2344337263608).

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

1222101001992 is a wasteful number, since it uses less digits than its factorization.

1222101001992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26328 (or 26324 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 1222101001992 in words is "one trillion, two hundred twenty-two billion, one hundred one million, one thousand, nine hundred ninety-two".