1201200010021 has 8 divisors (see below), whose sum is σ = 1379368432800. Its totient is φ = 1034526324240.

The previous prime is 1201200010001. The next prime is 1201200010027. The reversal of 1201200010021 is 1200100021021.

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 1201200010021 - 2³³ = 1192610075429 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 (1201200010027) 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, 2873684026 + ... + 2873684443.

It is an arithmetic number, because the mean of its divisors is an integer number (172421054100).

Almost surely, 2^{1201200010021} is an apocalyptic number.

1201200010021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201200010021 is a deficient number, since it is larger than the sum of its proper divisors (178168422779).

1201200010021 is a wasteful number, since it uses less digits than its factorization.

1201200010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747368499.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1201200010021 its reverse (1200100021021), we get a palindrome (2401300031042).

It can be divided in two parts, 12012000 and 10021, that added together give a palindrome (12022021).

The spelling of 1201200010021 in words is "one trillion, two hundred one billion, two hundred million, ten thousand, twenty-one".