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121031012 = 2253570901
BaseRepresentation
bin1110011011011…
…00100101100100
322102202000100002
413031230211210
5221440443022
620002040432
72666514044
oct715544544
9272660302
10121031012
1162356433
1234649118
131c0c82ab
1412107724
15a95b092
hex736c964

121031012 has 12 divisors (see below), whose sum is σ = 215800956. Its totient is φ = 59373600.

The previous prime is 121030993. The next prime is 121031021. The reversal of 121031012 is 210130121.

Adding to 121031012 its reverse (210130121), we get a palindrome (331161133).

It can be written as a sum of positive squares in 2 ways, for example, as 98525476 + 22505536 = 9926^2 + 4744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121030984 and 121031002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285239 + ... + 285662.

It is an arithmetic number, because the mean of its divisors is an integer number (17983413).

Almost surely, 2121031012 is an apocalyptic number.

It is an amenable number.

121031012 is a deficient number, since it is larger than the sum of its proper divisors (94769944).

121031012 is a wasteful number, since it uses less digits than its factorization.

121031012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570958 (or 570956 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 121031012 is about 11001.4095460536. The cubic root of 121031012 is about 494.6509963803.

The spelling of 121031012 in words is "one hundred twenty-one million, thirty-one thousand, twelve".

Divisors: 1 2 4 53 106 212 570901 1141802 2283604 30257753 60515506 121031012