1121211221010 has 16 divisors (see below), whose sum is σ = 2690906930496. Its totient is φ = 298989658928.

The previous prime is 1121211220991. The next prime is 1121211221087. The reversal of 1121211221010 is 101221121211.

It is a happy number.

It is a super-2 number, since 2×1121211221010² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

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, 18686853654 + ... + 18686853713.

It is an arithmetic number, because the mean of its divisors is an integer number (168181683156).

Almost surely, 2^{1121211221010} is an apocalyptic number.

1121211221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121211221010 is an abundant number, since it is smaller than the sum of its proper divisors (1569695709486).

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

1121211221010 is a wasteful number, since it uses less digits than its factorization.

1121211221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37373707377.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1121211221010 its reverse (101221121211), we get a palindrome (1222432342221).

The spelling of 1121211221010 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, two hundred twenty-one thousand, ten".