1011202120001 has 4 divisors (see below), whose sum is σ = 1011233553072. Its totient is φ = 1011170686932.

The previous prime is 1011202119989. The next prime is 1011202120031. The reversal of 1011202120001 is 1000212021101.

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 1011202120001 - 2¹⁴ = 1011202103617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011202120031) 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, 15668231 + ... + 15732636.

It is an arithmetic number, because the mean of its divisors is an integer number (252808388268).

Almost surely, 2^{1011202120001} is an apocalyptic number.

It is an amenable number.

1011202120001 is a deficient number, since it is larger than the sum of its proper divisors (31433071).

1011202120001 is an equidigital number, since it uses as much as digits as its factorization.

1011202120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31433070.

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

Adding to 1011202120001 its reverse (1000212021101), we get a palindrome (2011414141102).

The spelling of 1011202120001 in words is "one trillion, eleven billion, two hundred two million, one hundred twenty thousand, one".