1220221111010 has 32 divisors (see below), whose sum is σ = 2411938594944. Its totient is φ = 440778240000.

The previous prime is 1220221111007. The next prime is 1220221111037. The reversal of 1220221111010 is 101111220221.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36714911 + ... + 36748130.

It is an arithmetic number, because the mean of its divisors is an integer number (75373081092).

Almost surely, 2^{1220221111010} is an apocalyptic number.

1220221111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220221111010 is a deficient number, since it is larger than the sum of its proper divisors (1191717483934).

1220221111010 is a wasteful number, since it uses less digits than its factorization.

1220221111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73463210.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220221111010 its reverse (101111220221), we get a palindrome (1321332331231).

The spelling of 1220221111010 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred eleven thousand, ten".