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1213100131196 = 221573376957203
BaseRepresentation
bin10001101001110010011…
…001110000001101111100
311021222020000220201121202
4101221302121300031330
5124333412113144241
62325142425515032
7153433515660242
oct21516231601574
94258200821552
101213100131196
114285224425a8
12177134942a78
138a519647b25
1442a002ba792
152184ed1ad9b
hex11a7267037c

1213100131196 has 24 divisors (see below), whose sum is σ = 2136547662480. Its totient is φ = 602658306432.

The previous prime is 1213100131141. The next prime is 1213100131249. The reversal of 1213100131196 is 6911310013121.

It is a super-2 number, since 2×12131001311962 (a number of 25 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 7 ways as a sum of consecutive naturals, for example, 21178331 + ... + 21235533.

It is an arithmetic number, because the mean of its divisors is an integer number (89022819270).

Almost surely, 21213100131196 is an apocalyptic number.

It is an amenable number.

1213100131196 is a deficient number, since it is larger than the sum of its proper divisors (923447531284).

1213100131196 is a wasteful number, since it uses less digits than its factorization.

1213100131196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91133 (or 91131 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 1213100131196 in words is "one trillion, two hundred thirteen billion, one hundred million, one hundred thirty-one thousand, one hundred ninety-six".

Divisors: 1 2 4 157 314 628 33769 57203 67538 114406 135076 228812 5301733 8980871 10603466 17961742 21206932 35923484 1931688107 3863376214 7726752428 303275032799 606550065598 1213100131196