1211200221122 has 8 divisors (see below), whose sum is σ = 1816810269456. Its totient is φ = 605596797972.

The previous prime is 1211200221017. The next prime is 1211200221131. The reversal of 1211200221122 is 2211220021121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1211200221122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170788 + ... + 1947599.

It is an arithmetic number, because the mean of its divisors is an integer number (227101283682).

Almost surely, 2^{1211200221122} is an apocalyptic number.

1211200221122 is a deficient number, since it is larger than the sum of its proper divisors (605610048334).

1211200221122 is a wasteful number, since it uses less digits than its factorization.

1211200221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312592.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1211200221122 its reverse (2211220021121), we get a palindrome (3422420242243).

The spelling of 1211200221122 in words is "one trillion, two hundred eleven billion, two hundred million, two hundred twenty-one thousand, one hundred twenty-two".