1220925661006 has 32 divisors (see below), whose sum is σ = 1903107618720. Its totient is φ = 586953962496.

The previous prime is 1220925661003. The next prime is 1220925661051. The reversal of 1220925661006 is 6001665290221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220925661006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220925661001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11651161 + ... + 11755483.

It is an arithmetic number, because the mean of its divisors is an integer number (59472113085).

Almost surely, 2^{1220925661006} is an apocalyptic number.

1220925661006 is a deficient number, since it is larger than the sum of its proper divisors (682181957714).

1220925661006 is a wasteful number, since it uses less digits than its factorization.

1220925661006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106228.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 1220925661006 in words is "one trillion, two hundred twenty billion, nine hundred twenty-five million, six hundred sixty-one thousand, six".