1220011100210 has 64 divisors (see below), whose sum is σ = 2554745909760. Its totient is φ = 410850316800.

The previous prime is 1220011100197. The next prime is 1220011100251. The reversal of 1220011100210 is 120011100221.

It is a super-2 number, since 2×1220011100210² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220011100191 and 1220011100200.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292292 + ... + 1589168.

It is an arithmetic number, because the mean of its divisors is an integer number (39917904840).

Almost surely, 2^{1220011100210} is an apocalyptic number.

1220011100210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220011100210 is an abundant number, since it is smaller than the sum of its proper divisors (1334734809550).

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

1220011100210 is a wasteful number, since it uses less digits than its factorization.

1220011100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297131.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1220011100210 its sum of digits (11), we get a palindrome (1220011100221).

Adding to 1220011100210 its reverse (120011100221), we get a palindrome (1340022200431).

The spelling of 1220011100210 in words is "one trillion, two hundred twenty billion, eleven million, one hundred thousand, two hundred ten".