1221000102122 has 8 divisors (see below), whose sum is σ = 1849633818372. Its totient is φ = 604455496000.

The previous prime is 1221000102109. The next prime is 1221000102167. The reversal of 1221000102122 is 2212010001221.

It can be written as a sum of positive squares in 2 ways, for example, as 904459962961 + 316540139161 = 951031^2 + 562619^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1221000102097 and 1221000102106.

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, 3022277279 + ... + 3022277682.

Almost surely, 2^{1221000102122} is an apocalyptic number.

1221000102122 is a deficient number, since it is larger than the sum of its proper divisors (628633716250).

1221000102122 is a wasteful number, since it uses less digits than its factorization.

1221000102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6044555064.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1221000102122 its reverse (2212010001221), we get a palindrome (3433010103343).

The spelling of 1221000102122 in words is "one trillion, two hundred twenty-one billion, one hundred two thousand, one hundred twenty-two".