121211020222012 has 24 divisors (see below), whose sum is σ = 242543070032256. Its totient is φ = 51921645183408.

The previous prime is 121211020221989. The next prime is 121211020222027. The reversal of 121211020222012 is 210222020112121.

It is a super-2 number, since 2×121211020222012² (a number of 29 digits) contains 22 as substring.

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, 1080564238 + ... + 1080676405.

It is an arithmetic number, because the mean of its divisors is an integer number (10105961251344).

Almost surely, 2^{121211020222012} is an apocalyptic number.

It is an amenable number.

121211020222012 is an abundant number, since it is smaller than the sum of its proper divisors (121332049810244).

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

121211020222012 is a wasteful number, since it uses less digits than its factorization.

121211020222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161242657 (or 2161242655 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121211020222012 its reverse (210222020112121), we get a palindrome (331433040334133).

The spelling of 121211020222012 in words is "one hundred twenty-one trillion, two hundred eleven billion, twenty million, two hundred twenty-two thousand, twelve".