1211020022212 has 288 divisors, whose sum is σ = 2995860639744. Its totient is φ = 415151193600.

The previous prime is 1211020022207. The next prime is 1211020022243. The reversal of 1211020022212 is 2122200201121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 379509537 + ... + 379512727.

It is an arithmetic number, because the mean of its divisors is an integer number (10402293888).

Almost surely, 2^{1211020022212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211020022212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1497930319872).

1211020022212 is an abundant number, since it is smaller than the sum of its proper divisors (1784840617532).

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

1211020022212 is a wasteful number, since it uses less digits than its factorization.

1211020022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579 (or 3564 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1211020022212 its reverse (2122200201121), we get a palindrome (3333220223333).

The spelling of 1211020022212 in words is "one trillion, two hundred eleven billion, twenty million, twenty-two thousand, two hundred twelve".