1200100211212 has 24 divisors (see below), whose sum is σ = 2402364777120. Its totient is φ = 513864871680.

The previous prime is 1200100211197. The next prime is 1200100211237. The reversal of 1200100211212 is 2121120010021.

It is a junction number, because it is equal to n+sod(n) for n = 1200100211192 and 1200100211201.

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, 19292989 + ... + 19355092.

It is an arithmetic number, because the mean of its divisors is an integer number (100098532380).

Almost surely, 2^{1200100211212} is an apocalyptic number.

It is an amenable number.

1200100211212 is an abundant number, since it is smaller than the sum of its proper divisors (1202264565908).

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

1200100211212 is a wasteful number, since it uses less digits than its factorization.

1200100211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38649201 (or 38649199 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200100211212 its reverse (2121120010021), we get a palindrome (3321220221233).

The spelling of 1200100211212 in words is "one trillion, two hundred billion, one hundred million, two hundred eleven thousand, two hundred twelve".