1012221211212 has 18 divisors (see below), whose sum is σ = 2558670283988. Its totient is φ = 337407070392.

The previous prime is 1012221211063. The next prime is 1012221211231. The reversal of 1012221211212 is 2121121222101.

1012221211212 is a `hidden beast` number, since 10 + 12 + 221 + 211 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14058627898 + ... + 14058627969.

Almost surely, 2^{1012221211212} is an apocalyptic number.

1012221211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1012221211212 is an abundant number, since it is smaller than the sum of its proper divisors (1546449072776).

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

1012221211212 is a wasteful number, since it uses less digits than its factorization.

1012221211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28117255877 (or 28117255872 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1012221211212 its reverse (2121121222101), we get a palindrome (3133342433313).

The spelling of 1012221211212 in words is "one trillion, twelve billion, two hundred twenty-one million, two hundred eleven thousand, two hundred twelve".