1022205550 has 12 divisors (see below), whose sum is σ = 1901302416. Its totient is φ = 408882200.

The previous prime is 1022205539. The next prime is 1022205551. The reversal of 1022205550 is 555022201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022205551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10222006 + ... + 10222105.

It is an arithmetic number, because the mean of its divisors is an integer number (158441868).

Almost surely, 2^1022205550 is an apocalyptic number.

1022205550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1022205550 is a deficient number, since it is larger than the sum of its proper divisors (879096866).

1022205550 is a wasteful number, since it uses less digits than its factorization.

1022205550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20444123 (or 20444118 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1022205550 is about 31971.9494244564. The cubic root of 1022205550 is about 1007.3477286512.

Adding to 1022205550 its reverse (555022201), we get a palindrome (1577227751).

The spelling of 1022205550 in words is "one billion, twenty-two million, two hundred five thousand, five hundred fifty".