1221511352134 has 8 divisors (see below), whose sum is σ = 1844564122800. Its totient is φ = 606656644536.

The previous prime is 1221511352123. The next prime is 1221511352141. The reversal of 1221511352134 is 4312531151221.

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 = 1221511352096 and 1221511352105.

It is a congruent number.

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, 2049515394 + ... + 2049515989.

It is an arithmetic number, because the mean of its divisors is an integer number (230570515350).

Almost surely, 2^{1221511352134} is an apocalyptic number.

1221511352134 is a deficient number, since it is larger than the sum of its proper divisors (623052770666).

1221511352134 is a wasteful number, since it uses less digits than its factorization.

1221511352134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4099031534.

The product of its digits is 7200, while the sum is 31.

The spelling of 1221511352134 in words is "one trillion, two hundred twenty-one billion, five hundred eleven million, three hundred fifty-two thousand, one hundred thirty-four".