121023212212 has 48 divisors (see below), whose sum is σ = 254902112640. Its totient is φ = 49114795392.

The previous prime is 121023212209. The next prime is 121023212221. The reversal of 121023212212 is 212212320121.

It is a super-2 number, since 2×121023212212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 121023212212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1139238 + ... + 1240930.

It is an arithmetic number, because the mean of its divisors is an integer number (5310460680).

Almost surely, 2^121023212212 is an apocalyptic number.

It is an amenable number.

121023212212 is an abundant number, since it is smaller than the sum of its proper divisors (133878900428).

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

121023212212 is a wasteful number, since it uses less digits than its factorization.

121023212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103960 (or 103958 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121023212212 its reverse (212212320121), we get a palindrome (333235532333).

The spelling of 121023212212 in words is "one hundred twenty-one billion, twenty-three million, two hundred twelve thousand, two hundred twelve".