1021200222001 has 16 divisors (see below), whose sum is σ = 1072598008320. Its totient is φ = 971457701760.

The previous prime is 1021200221999. The next prime is 1021200222017. The reversal of 1021200222001 is 1002220021201.

It is a happy number.

1021200222001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1021200222001 - 2¹ = 1021200221999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021200222401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2008545 + ... + 2465086.

It is an arithmetic number, because the mean of its divisors is an integer number (67037375520).

Almost surely, 2^{1021200222001} is an apocalyptic number.

It is an amenable number.

1021200222001 is a deficient number, since it is larger than the sum of its proper divisors (51397786319).

1021200222001 is an equidigital number, since it uses as much as digits as its factorization.

1021200222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473816.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1021200222001 its reverse (1002220021201), we get a palindrome (2023420243202).

The spelling of 1021200222001 in words is "one trillion, twenty-one billion, two hundred million, two hundred twenty-two thousand, one".