1220021023301 has 4 divisors (see below), whose sum is σ = 1222251409632. Its totient is φ = 1217790636972.

The previous prime is 1220021023283. The next prime is 1220021023321. The reversal of 1220021023301 is 1033201200221.

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 1220021023301 - 2²² = 1220016828997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220021023301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220021023321) 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, 1115192345 + ... + 1115193438.

It is an arithmetic number, because the mean of its divisors is an integer number (305562852408).

Almost surely, 2^{1220021023301} is an apocalyptic number.

It is an amenable number.

1220021023301 is a deficient number, since it is larger than the sum of its proper divisors (2230386331).

1220021023301 is an equidigital number, since it uses as much as digits as its factorization.

1220021023301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230386330.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1220021023301 its reverse (1033201200221), we get a palindrome (2253222223522).

The spelling of 1220021023301 in words is "one trillion, two hundred twenty billion, twenty-one million, twenty-three thousand, three hundred one".