1220022212113 has 8 divisors (see below), whose sum is σ = 1263419231976. Its totient is φ = 1177379923200.

The previous prime is 1220022212107. The next prime is 1220022212119. The reversal of 1220022212113 is 3112122200221.

It is an interprime number because it is at equal distance from previous prime (1220022212107) and next prime (1220022212119).

It can be written as a sum of positive squares in 4 ways, for example, as 239779646929 + 980242565184 = 489673^2 + 990072^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220022212113 - 2⁵ = 1220022212081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220022212119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188679448 + ... + 188685913.

It is an arithmetic number, because the mean of its divisors is an integer number (157927403997).

Almost surely, 2^{1220022212113} is an apocalyptic number.

It is an amenable number.

1220022212113 is a deficient number, since it is larger than the sum of its proper divisors (43397019863).

1220022212113 is an equidigital number, since it uses as much as digits as its factorization.

1220022212113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377365475.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1220022212113 its reverse (3112122200221), we get a palindrome (4332144412334).

The spelling of 1220022212113 in words is "one trillion, two hundred twenty billion, twenty-two million, two hundred twelve thousand, one hundred thirteen".