11211111212202 has 48 divisors (see below), whose sum is σ = 26499216968640. Its totient is φ = 3397277347200.

The previous prime is 11211111212201. The next prime is 11211111212219. The reversal of 11211111212202 is 20221211111211.

It is a happy number.

It is a super-2 number, since 2×11211111212202² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11211111212201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38750802 + ... + 39039042.

It is an arithmetic number, because the mean of its divisors is an integer number (552067020180).

Almost surely, 2^{11211111212202} is an apocalyptic number.

11211111212202 is an abundant number, since it is smaller than the sum of its proper divisors (15288105756438).

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

11211111212202 is a wasteful number, since it uses less digits than its factorization.

11211111212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484699 (or 484696 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11211111212202 its reverse (20221211111211), we get a palindrome (31432322323413).

The spelling of 11211111212202 in words is "eleven trillion, two hundred eleven billion, one hundred eleven million, two hundred twelve thousand, two hundred two".