1021201211212 has 24 divisors (see below), whose sum is σ = 2199510301856. Its totient is φ = 403991687808.

The previous prime is 1021201211209. The next prime is 1021201211231. The reversal of 1021201211212 is 2121121021201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1402748553 + ... + 1402749280.

Almost surely, 2^{1021201211212} is an apocalyptic number.

It is an amenable number.

1021201211212 is an abundant number, since it is smaller than the sum of its proper divisors (1178309090644).

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

1021201211212 is a wasteful number, since it uses less digits than its factorization.

1021201211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805497857 (or 2805497855 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1021201211212 its reverse (2121121021201), we get a palindrome (3142322232413).

The spelling of 1021201211212 in words is "one trillion, twenty-one billion, two hundred one million, two hundred eleven thousand, two hundred twelve".