1212747201901 has 4 divisors (see below), whose sum is σ = 1212749595904. Its totient is φ = 1212744807900.

The previous prime is 1212747201877. The next prime is 1212747201959. The reversal of 1212747201901 is 1091027472121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212747201901 - 2⁹ = 1212747201389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212747201961) 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, 105165 + ... + 1560946.

It is an arithmetic number, because the mean of its divisors is an integer number (303187398976).

Almost surely, 2^{1212747201901} is an apocalyptic number.

It is an amenable number.

1212747201901 is a deficient number, since it is larger than the sum of its proper divisors (2394003).

1212747201901 is an equidigital number, since it uses as much as digits as its factorization.

1212747201901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394002.

The product of its (nonzero) digits is 14112, while the sum is 37.

The spelling of 1212747201901 in words is "one trillion, two hundred twelve billion, seven hundred forty-seven million, two hundred one thousand, nine hundred one".