11101220001212 has 24 divisors (see below), whose sum is σ = 21281176952112. Its totient is φ = 5025071289600.

The previous prime is 11101220001197. The next prime is 11101220001241. The reversal of 11101220001212 is 21210002210111.

It is a congruent 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, 523434323 + ... + 523455530.

It is an arithmetic number, because the mean of its divisors is an integer number (886715706338).

Almost surely, 2^{11101220001212} is an apocalyptic number.

It is an amenable number.

11101220001212 is a deficient number, since it is larger than the sum of its proper divisors (10179956950900).

11101220001212 is a wasteful number, since it uses less digits than its factorization.

11101220001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046890109 (or 1046890107 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11101220001212 its reverse (21210002210111), we get a palindrome (32311222211323).

The spelling of 11101220001212 in words is "eleven trillion, one hundred one billion, two hundred twenty million, one thousand, two hundred twelve".