1220021220022 has 16 divisors (see below), whose sum is σ = 1996999261632. Its totient is φ = 554388182920.

The previous prime is 1220021220013. The next prime is 1220021220031. The reversal of 1220021220022 is 2200221200221.

It is an interprime number because it is at equal distance from previous prime (1220021220013) and next prime (1220021220031).

It is a junction number, because it is equal to n+sod(n) for n = 1220021219978 and 1220021220005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8271088 + ... + 8417299.

It is an arithmetic number, because the mean of its divisors is an integer number (124812453852).

Almost surely, 2^{1220021220022} is an apocalyptic number.

1220021220022 is a deficient number, since it is larger than the sum of its proper divisors (776978041610).

1220021220022 is a wasteful number, since it uses less digits than its factorization.

1220021220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16691723.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1220021220022 its reverse (2200221200221), we get a palindrome (3420242420243).

The spelling of 1220021220022 in words is "one trillion, two hundred twenty billion, twenty-one million, two hundred twenty thousand, twenty-two".