1212214120 has 64 divisors (see below), whose sum is σ = 2966498640. Its totient is φ = 443136000.

The previous prime is 1212214109. The next prime is 1212214147. The reversal of 1212214120 is 214122121.

It can be written as a sum of positive squares in 8 ways, for example, as 631114884 + 581099236 = 25122^2 + 24106^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212214094 and 1212214103.

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, 40980 + ... + 64060.

Almost surely, 2^1212214120 is an apocalyptic number.

1212214120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212214120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1483249320).

1212214120 is an abundant number, since it is smaller than the sum of its proper divisors (1754284520).

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

1212214120 is a wasteful number, since it uses less digits than its factorization.

1212214120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23206 (or 23202 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1212214120 is about 34816.8654533977. The cubic root of 1212214120 is about 1066.2518052477.

Adding to 1212214120 its reverse (214122121), we get a palindrome (1426336241).

The spelling of 1212214120 in words is "one billion, two hundred twelve million, two hundred fourteen thousand, one hundred twenty".