1221102522502 has 8 divisors (see below), whose sum is σ = 1831682580696. Its totient is φ = 610541662272.

The previous prime is 1221102522433. The next prime is 1221102522509. The reversal of 1221102522502 is 2052252011221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221102522509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4639408 + ... + 4895539.

It is an arithmetic number, because the mean of its divisors is an integer number (228960322587).

Almost surely, 2^{1221102522502} is an apocalyptic number.

1221102522502 is a deficient number, since it is larger than the sum of its proper divisors (610580058194).

1221102522502 is an equidigital number, since it uses as much as digits as its factorization.

1221102522502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9598982.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 1221102522502 its reverse (2052252011221), we get a palindrome (3273354533723).

The spelling of 1221102522502 in words is "one trillion, two hundred twenty-one billion, one hundred two million, five hundred twenty-two thousand, five hundred two".