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13421220213 = 329202976031
BaseRepresentation
bin11000111111111011…
…11001000101110101
31021122100101121222010
430133331321011311
5204441313021323
610055435154433
7653406326622
oct143775710565
937570347863
1013421220213
115767a24435
1227268a5a19
13135b732c2b
14914695349
15538407c93
hex31ff79175

13421220213 has 16 divisors (see below), whose sum is σ = 18521395200. Its totient is φ = 8634575040.

The previous prime is 13421220179. The next prime is 13421220223. The reversal of 13421220213 is 31202212431.

It is not a de Polignac number, because 13421220213 - 26 = 13421220149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13421220213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13421220223) 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, 138508 + ... + 214538.

It is an arithmetic number, because the mean of its divisors is an integer number (1157587200).

Almost surely, 213421220213 is an apocalyptic number.

It is an amenable number.

13421220213 is a deficient number, since it is larger than the sum of its proper divisors (5100174987).

13421220213 is a wasteful number, since it uses less digits than its factorization.

13421220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78092.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 13421220213 its reverse (31202212431), we get a palindrome (44623432644).

The spelling of 13421220213 in words is "thirteen billion, four hundred twenty-one million, two hundred twenty thousand, two hundred thirteen".

Divisors: 1 3 29 87 2029 6087 58841 76031 176523 228093 2204899 6614697 154266899 462800697 4473740071 13421220213