11021021221210 has 192 divisors, whose sum is σ = 26848051324416. Its totient is φ = 3169601487360.

The previous prime is 11021021221127. The next prime is 11021021221247. The reversal of 11021021221210 is 1212212012011.

It is a super-2 number, since 2×11021021221210² (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 95 ways as a sum of consecutive naturals, for example, 291442264 + ... + 291480076.

It is an arithmetic number, because the mean of its divisors is an integer number (139833600648).

Almost surely, 2^{11021021221210} is an apocalyptic number.

11021021221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11021021221210 is an abundant number, since it is smaller than the sum of its proper divisors (15827030103206).

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

11021021221210 is a wasteful number, since it uses less digits than its factorization.

11021021221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40509 (or 40498 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11021021221210 its reverse (1212212012011), we get a palindrome (12233233233221).

The spelling of 11021021221210 in words is "eleven trillion, twenty-one billion, twenty-one million, two hundred twenty-one thousand, two hundred ten".