121100100212 has 48 divisors (see below), whose sum is σ = 260860414080. Its totient is φ = 47902326912.

The previous prime is 121100100131. The next prime is 121100100223. The reversal of 121100100212 is 212001001121.

121100100212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121100100193 and 121100100202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5210714 + ... + 5233902.

It is an arithmetic number, because the mean of its divisors is an integer number (5434591960).

Almost surely, 2^121100100212 is an apocalyptic number.

It is an amenable number.

121100100212 is an abundant number, since it is smaller than the sum of its proper divisors (139760313868).

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

121100100212 is a wasteful number, since it uses less digits than its factorization.

121100100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37560 (or 37558 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121100100212 its reverse (212001001121), we get a palindrome (333101101333).

Subtracting 121100100212 from its reverse (212001001121), we obtain a palindrome (90900900909).

The spelling of 121100100212 in words is "one hundred twenty-one billion, one hundred million, one hundred thousand, two hundred twelve".