1211200431222 has 16 divisors (see below), whose sum is σ = 2527722639360. Its totient is φ = 386179847592.

The previous prime is 1211200431211. The next prime is 1211200431269. The reversal of 1211200431222 is 2221340021121.

It is a happy number.

It is a congruent number.

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, 4388407222 + ... + 4388407497.

It is an arithmetic number, because the mean of its divisors is an integer number (157982664960).

Almost surely, 2^{1211200431222} is an apocalyptic number.

1211200431222 is an abundant number, since it is smaller than the sum of its proper divisors (1316522208138).

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

1211200431222 is a wasteful number, since it uses less digits than its factorization.

1211200431222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8776814747.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1211200431222 its reverse (2221340021121), we get a palindrome (3432540452343).

The spelling of 1211200431222 in words is "one trillion, two hundred eleven billion, two hundred million, four hundred thirty-one thousand, two hundred twenty-two".