1221035622 has 16 divisors (see below), whose sum is σ = 2443530672. Its totient is φ = 406768640.

The previous prime is 1221035617. The next prime is 1221035639. The reversal of 1221035622 is 2265301221.

It is a junction number, because it is equal to n+sod(n) for n = 1221035592 and 1221035601.

It is a congruent 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, 49779 + ... + 70142.

It is an arithmetic number, because the mean of its divisors is an integer number (152720667).

Almost surely, 2^1221035622 is an apocalyptic number.

1221035622 is an abundant number, since it is smaller than the sum of its proper divisors (1222495050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221035622 is a wasteful number, since it uses less digits than its factorization.

1221035622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121623.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1221035622 is about 34943.3201341830. The cubic root of 1221035622 is about 1068.8319924237.

Adding to 1221035622 its reverse (2265301221), we get a palindrome (3486336843).

The spelling of 1221035622 in words is "one billion, two hundred twenty-one million, thirty-five thousand, six hundred twenty-two".