1221111108074 has 16 divisors (see below), whose sum is σ = 2151888107040. Its totient is φ = 512354310960.

The previous prime is 1221111108073. The next prime is 1221111108103. The reversal of 1221111108074 is 4708011111221.

It is a super-2 number, since 2×1221111108074² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1221111108073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2134809344 + ... + 2134809915.

It is an arithmetic number, because the mean of its divisors is an integer number (134493006690).

Almost surely, 2^{1221111108074} is an apocalyptic number.

1221111108074 is a deficient number, since it is larger than the sum of its proper divisors (930776998966).

1221111108074 is a wasteful number, since it uses less digits than its factorization.

1221111108074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4269619285.

The product of its (nonzero) digits is 896, while the sum is 29.

Adding to 1221111108074 its reverse (4708011111221), we get a palindrome (5929122219295).

The spelling of 1221111108074 in words is "one trillion, two hundred twenty-one billion, one hundred eleven million, one hundred eight thousand, seventy-four".