1212552105 has 16 divisors (see below), whose sum is σ = 1941164160. Its totient is φ = 646334208.

The previous prime is 1212552101. The next prime is 1212552151. The reversal of 1212552105 is 5012552121.

It is not a de Polignac number, because 1212552105 - 2² = 1212552101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212552101) 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, 6516 + ... + 49674.

It is an arithmetic number, because the mean of its divisors is an integer number (121322760).

Almost surely, 2^1212552105 is an apocalyptic number.

1212552105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1212552105 is a deficient number, since it is larger than the sum of its proper divisors (728612055).

1212552105 is a wasteful number, since it uses less digits than its factorization.

1212552105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45040.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1212552105 is about 34821.7188691196. The cubic root of 1212552105 is about 1066.3508921506.

The spelling of 1212552105 in words is "one billion, two hundred twelve million, five hundred fifty-two thousand, one hundred five".