11221020111010 has 128 divisors (see below), whose sum is σ = 22023535564800. Its totient is φ = 4099737922560.

The previous prime is 11221020110969. The next prime is 11221020111023. The reversal of 11221020111010 is 1011102012211.

It is a happy number.

It is a super-2 number, since 2×11221020111010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2066102995 + ... + 2066108425.

It is an arithmetic number, because the mean of its divisors is an integer number (172058871600).

Almost surely, 2^{11221020111010} is an apocalyptic number.

11221020111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11221020111010 is a deficient number, since it is larger than the sum of its proper divisors (10802515453790).

11221020111010 is a wasteful number, since it uses less digits than its factorization.

11221020111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7256.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11221020111010 its reverse (1011102012211), we get a palindrome (12232122123221).

The spelling of 11221020111010 in words is "eleven trillion, two hundred twenty-one billion, twenty million, one hundred eleven thousand, ten".