11221211211010 has 16 divisors (see below), whose sum is σ = 20212081224696. Its totient is φ = 4485395363328.

The previous prime is 11221211210971. The next prime is 11221211211031. The reversal of 11221211211010 is 1011211212211.

It can be written as a sum of positive squares in 4 ways, for example, as 10727478730089 + 493732480921 = 3275283^2 + 702661^2 .

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, 386124879 + ... + 386153938.

Almost surely, 2^{11221211211010} is an apocalyptic number.

11221211211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11221211211010 is a deficient number, since it is larger than the sum of its proper divisors (8990870013686).

11221211211010 is a wasteful number, since it uses less digits than its factorization.

11221211211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772280277.

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

Adding to 11221211211010 its reverse (1011211212211), we get a palindrome (12232422423221).

The spelling of 11221211211010 in words is "eleven trillion, two hundred twenty-one billion, two hundred eleven million, two hundred eleven thousand, ten".