1220011000122 has 32 divisors (see below), whose sum is σ = 2487044036160. Its totient is φ = 398839400960.

The previous prime is 1220011000079. The next prime is 1220011000123. The reversal of 1220011000122 is 2210001100221.

It is a junction number, because it is equal to n+sod(n) for n = 1220011000098 and 1220011000107.

It is not an unprimeable number, because it can be changed into a prime (1220011000123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46954 + ... + 1562762.

It is an arithmetic number, because the mean of its divisors is an integer number (77720126130).

Almost surely, 2^{1220011000122} is an apocalyptic number.

1220011000122 is an abundant number, since it is smaller than the sum of its proper divisors (1267033036038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220011000122 is a wasteful number, since it uses less digits than its factorization.

1220011000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518398.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1220011000122 its reverse (2210001100221), we get a palindrome (3430012100343).

The spelling of 1220011000122 in words is "one trillion, two hundred twenty billion, eleven million, one hundred twenty-two", and thus it is an aban number.