1021220002201 has 4 divisors (see below), whose sum is σ = 1167108573952. Its totient is φ = 875331430452.

The previous prime is 1021220002199. The next prime is 1021220002219. The reversal of 1021220002201 is 1022000221201.

It is a happy number.

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 1021220002201 - 2¹ = 1021220002199 is a prime.

It is a super-4 number, since 4×1021220002201⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021220002241) 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, 72944285865 + ... + 72944285878.

It is an arithmetic number, because the mean of its divisors is an integer number (291777143488).

Almost surely, 2^{1021220002201} is an apocalyptic number.

It is an amenable number.

1021220002201 is a deficient number, since it is larger than the sum of its proper divisors (145888571751).

1021220002201 is an equidigital number, since it uses as much as digits as its factorization.

1021220002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145888571750.

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

Adding to 1021220002201 its reverse (1022000221201), we get a palindrome (2043220223402).

The spelling of 1021220002201 in words is "one trillion, twenty-one billion, two hundred twenty million, two thousand, two hundred one".