1213405022201 has 4 divisors (see below), whose sum is σ = 1213416543732. Its totient is φ = 1213393500672.

The previous prime is 1213405022147. The next prime is 1213405022261. The reversal of 1213405022201 is 1022205043121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 564331488400 + 649073533801 = 751220^2 + 805651^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213405022201 - 2²² = 1213400827897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213405022261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5601320 + ... + 5813913.

It is an arithmetic number, because the mean of its divisors is an integer number (303354135933).

Almost surely, 2^{1213405022201} is an apocalyptic number.

It is an amenable number.

1213405022201 is a deficient number, since it is larger than the sum of its proper divisors (11521531).

1213405022201 is a wasteful number, since it uses less digits than its factorization.

1213405022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11521530.

The product of its (nonzero) digits is 960, while the sum is 23.

The spelling of 1213405022201 in words is "one trillion, two hundred thirteen billion, four hundred five million, twenty-two thousand, two hundred one".