1220001020319 has 4 divisors (see below), whose sum is σ = 1626668027096. Its totient is φ = 813334013544.

The previous prime is 1220001020311. The next prime is 1220001020363. The reversal of 1220001020319 is 9130201000221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1220001020319 - 2³ = 1220001020311 is a prime.

It is a super-2 number, since 2×1220001020319² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220001020295 and 1220001020304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220001020311) 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, 203333503384 + ... + 203333503389.

It is an arithmetic number, because the mean of its divisors is an integer number (406667006774).

Almost surely, 2^{1220001020319} is an apocalyptic number.

1220001020319 is a deficient number, since it is larger than the sum of its proper divisors (406667006777).

1220001020319 is an equidigital number, since it uses as much as digits as its factorization.

1220001020319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406667006776.

The product of its (nonzero) digits is 216, while the sum is 21.

The spelling of 1220001020319 in words is "one trillion, two hundred twenty billion, one million, twenty thousand, three hundred nineteen".