1220121102122 has 8 divisors (see below), whose sum is σ = 1970964857316. Its totient is φ = 563132816352.

The previous prime is 1220121102107. The next prime is 1220121102139. The reversal of 1220121102122 is 2212011210221.

It can be written as a sum of positive squares in 2 ways, for example, as 1182201718681 + 37919383441 = 1087291^2 + 194729^2 .

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 1220121102122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23463867323 + ... + 23463867374.

Almost surely, 2^{1220121102122} is an apocalyptic number.

1220121102122 is a deficient number, since it is larger than the sum of its proper divisors (750843755194).

1220121102122 is a wasteful number, since it uses less digits than its factorization.

1220121102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46927734712.

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

Adding to 1220121102122 its reverse (2212011210221), we get a palindrome (3432132312343).

The spelling of 1220121102122 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, one hundred two thousand, one hundred twenty-two".