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199121012 = 2249780253
BaseRepresentation
bin10111101111001…
…01100001110100
3111212200101200022
423313211201310
5401433333022
631431504312
74635333506
oct1367454164
9455611608
10199121012
11a2442622
1256828098
133233a1ac
141c633d76
1512733c42
hexbde5874

199121012 has 6 divisors (see below), whose sum is σ = 348461778. Its totient is φ = 99560504.

The previous prime is 199121009. The next prime is 199121033. The reversal of 199121012 is 210121991.

199121012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 153908836 + 45212176 = 12406^2 + 6724^2 .

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, 24890123 + ... + 24890130.

It is an arithmetic number, because the mean of its divisors is an integer number (58076963).

Almost surely, 2199121012 is an apocalyptic number.

It is an amenable number.

199121012 is a deficient number, since it is larger than the sum of its proper divisors (149340766).

199121012 is a wasteful number, since it uses less digits than its factorization.

199121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49780257 (or 49780255 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 199121012 is about 14111.0244844235. The cubic root of 199121012 is about 583.9455639822.

The spelling of 199121012 in words is "one hundred ninety-nine million, one hundred twenty-one thousand, twelve".

Divisors: 1 2 4 49780253 99560506 199121012