1200102011021 has 8 divisors (see below), whose sum is σ = 1204346893824. Its totient is φ = 1195863737040.

The previous prime is 1200102010993. The next prime is 1200102011023. The reversal of 1200102011021 is 1201102010021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200102011021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200102010993 and 1200102011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200102011023) 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, 1288241 + ... + 2014886.

It is an arithmetic number, because the mean of its divisors is an integer number (150543361728).

Almost surely, 2^{1200102011021} is an apocalyptic number.

It is an amenable number.

1200102011021 is a deficient number, since it is larger than the sum of its proper divisors (4244882803).

1200102011021 is an equidigital number, since it uses as much as digits as its factorization.

1200102011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304411.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1200102011021 its reverse (1201102010021), we get a palindrome (2401204021042).

The spelling of 1200102011021 in words is "one trillion, two hundred billion, one hundred two million, eleven thousand, twenty-one".