1022122220155 has 8 divisors (see below), whose sum is σ = 1226552321232. Its totient is φ = 817694004768.

The previous prime is 1022122220111. The next prime is 1022122220219. The reversal of 1022122220155 is 5510222212201.

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

It is a cyclic number.

It is not a de Polignac number, because 1022122220155 - 2¹¹ = 1022122218107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387344 + ... + 1992226.

It is an arithmetic number, because the mean of its divisors is an integer number (153319040154).

Almost surely, 2^{1022122220155} is an apocalyptic number.

1022122220155 is a deficient number, since it is larger than the sum of its proper divisors (204430101077).

1022122220155 is an equidigital number, since it uses as much as digits as its factorization.

1022122220155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942845.

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

Adding to 1022122220155 its reverse (5510222212201), we get a palindrome (6532344432356).

The spelling of 1022122220155 in words is "one trillion, twenty-two billion, one hundred twenty-two million, two hundred twenty thousand, one hundred fifty-five".