1021202122001 has 4 divisors (see below), whose sum is σ = 1021374540912. Its totient is φ = 1021029703092.

The previous prime is 1021202121971. The next prime is 1021202122013. The reversal of 1021202122001 is 1002212021201.

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 1021202122001 - 2⁶ = 1021202121937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021202122081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86200571 + ... + 86212416.

It is an arithmetic number, because the mean of its divisors is an integer number (255343635228).

Almost surely, 2^{1021202122001} is an apocalyptic number.

It is an amenable number.

1021202122001 is a deficient number, since it is larger than the sum of its proper divisors (172418911).

1021202122001 is an equidigital number, since it uses as much as digits as its factorization.

1021202122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172418910.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1021202122001 its reverse (1002212021201), we get a palindrome (2023414143202).

The spelling of 1021202122001 in words is "one trillion, twenty-one billion, two hundred two million, one hundred twenty-two thousand, one".