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113121120212 = 2228280280053
BaseRepresentation
bin110100101011010001…
…0110100111111010100
3101210222121100022101222
41221112202310333110
53323133001321322
6123544522105512
711113150441202
oct1512642647724
9353877308358
10113121120212
1143a79a17a01
1219b1004b298
13a88a00b1b9
145691918072
152e21113e42
hex1a568b4fd4

113121120212 has 6 divisors (see below), whose sum is σ = 197961960378. Its totient is φ = 56560560104.

The previous prime is 113121120199. The next prime is 113121120221. The reversal of 113121120212 is 212021121311.

Adding to 113121120212 its reverse (212021121311), we get a palindrome (325142241523).

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66928794436 + 46192325776 = 258706^2 + 214924^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14140140023 + ... + 14140140030.

It is an arithmetic number, because the mean of its divisors is an integer number (32993660063).

Almost surely, 2113121120212 is an apocalyptic number.

It is an amenable number.

113121120212 is a deficient number, since it is larger than the sum of its proper divisors (84840840166).

113121120212 is a wasteful number, since it uses less digits than its factorization.

113121120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28280280057 (or 28280280055 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

The spelling of 113121120212 in words is "one hundred thirteen billion, one hundred twenty-one million, one hundred twenty thousand, two hundred twelve".