1102011211221 has 16 divisors (see below), whose sum is σ = 1493474887680. Its totient is φ = 722611465920.

The previous prime is 1102011211211. The next prime is 1102011211241. The reversal of 1102011211221 is 1221121102011.

It is a happy number.

It is not a de Polignac number, because 1102011211221 - 2²⁵ = 1101977656789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1102011211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102011211211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12167020 + ... + 12257258.

It is an arithmetic number, because the mean of its divisors is an integer number (93342180480).

Almost surely, 2^{1102011211221} is an apocalyptic number.

It is an amenable number.

1102011211221 is a deficient number, since it is larger than the sum of its proper divisors (391463676459).

1102011211221 is an equidigital number, since it uses as much as digits as its factorization.

1102011211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157036.

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

Adding to 1102011211221 its reverse (1221121102011), we get a palindrome (2323132313232).

The spelling of 1102011211221 in words is "one trillion, one hundred two billion, eleven million, two hundred eleven thousand, two hundred twenty-one".