1213211022 has 32 divisors (see below), whose sum is σ = 2476150560. Its totient is φ = 396140160.

The previous prime is 1213211011. The next prime is 1213211039. The reversal of 1213211022 is 2201123121.

It is a junction number, because it is equal to n+sod(n) for n = 1213210992 and 1213211010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222772 + ... + 228152.

It is an arithmetic number, because the mean of its divisors is an integer number (77379705).

Almost surely, 2^1213211022 is an apocalyptic number.

1213211022 is an abundant number, since it is smaller than the sum of its proper divisors (1262939538).

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

1213211022 is a wasteful number, since it uses less digits than its factorization.

1213211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6148.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1213211022 is about 34831.1788775516. The cubic root of 1213211022 is about 1066.5440136097.

Adding to 1213211022 its reverse (2201123121), we get a palindrome (3414334143).

The spelling of 1213211022 in words is "one billion, two hundred thirteen million, two hundred eleven thousand, twenty-two".