1221011201122 has 32 divisors (see below), whose sum is σ = 1875077867520. Its totient is φ = 596050554960.

The previous prime is 1221011201099. The next prime is 1221011201153. The reversal of 1221011201122 is 2211021101221.

It is a junction number, because it is equal to n+sod(n) for n = 1221011201096 and 1221011201105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84744043 + ... + 84758449.

It is an arithmetic number, because the mean of its divisors is an integer number (58596183360).

Almost surely, 2^{1221011201122} is an apocalyptic number.

1221011201122 is a deficient number, since it is larger than the sum of its proper divisors (654066666398).

1221011201122 is a wasteful number, since it uses less digits than its factorization.

1221011201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16606.

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

Adding to 1221011201122 its reverse (2211021101221), we get a palindrome (3432032302343).

Subtracting 1221011201122 from its reverse (2211021101221), we obtain a palindrome (990009900099).

The spelling of 1221011201122 in words is "one trillion, two hundred twenty-one billion, eleven million, two hundred one thousand, one hundred twenty-two".