1261005032212 has 12 divisors (see below), whose sum is σ = 2206767247776. Its totient is φ = 630500104280.

The previous prime is 1261005032207. The next prime is 1261005032249. The reversal of 1261005032212 is 2122305001621.

It is a super-2 number, since 2×1261005032212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 1121313 + ... + 1944055.

It is an arithmetic number, because the mean of its divisors is an integer number (183897270648).

Almost surely, 2^{1261005032212} is an apocalyptic number.

It is an amenable number.

1261005032212 is a deficient number, since it is larger than the sum of its proper divisors (945762215564).

1261005032212 is a wasteful number, since it uses less digits than its factorization.

1261005032212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205918 (or 1205916 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 1261005032212 in words is "one trillion, two hundred sixty-one billion, five million, thirty-two thousand, two hundred twelve".