1201881961292 has 24 divisors (see below), whose sum is σ = 2140195070832. Its totient is φ = 590419972800.

The previous prime is 1201881961253. The next prime is 1201881961309. The reversal of 1201881961292 is 2921691881021.

It is a self number, because there is not a number n which added to its sum of digits gives 1201881961292.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2573759 + ... + 3004662.

It is an arithmetic number, because the mean of its divisors is an integer number (89174794618).

Almost surely, 2^{1201881961292} is an apocalyptic number.

It is an amenable number.

1201881961292 is a deficient number, since it is larger than the sum of its proper divisors (938313109540).

1201881961292 is a wasteful number, since it uses less digits than its factorization.

1201881961292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579369 (or 5579367 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 50.

The spelling of 1201881961292 in words is "one trillion, two hundred one billion, eight hundred eighty-one million, nine hundred sixty-one thousand, two hundred ninety-two".