1201531453021 has 8 divisors (see below), whose sum is σ = 1216760688000. Its totient is φ = 1186302717600.

The previous prime is 1201531452991. The next prime is 1201531453063. The reversal of 1201531453021 is 1203541351021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201531453021 - 2⁹ = 1201531452509 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 (1201531423021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8254530 + ... + 8398828.

It is an arithmetic number, because the mean of its divisors is an integer number (152095086000).

Almost surely, 2^{1201531453021} is an apocalyptic number.

It is an amenable number.

1201531453021 is a deficient number, since it is larger than the sum of its proper divisors (15229234979).

1201531453021 is a wasteful number, since it uses less digits than its factorization.

1201531453021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249779.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 1201531453021 in words is "one trillion, two hundred one billion, five hundred thirty-one million, four hundred fifty-three thousand, twenty-one".