1220414121 has 10 divisors (see below), whose sum is σ = 1823087882. Its totient is φ = 813609360.

The previous prime is 1220414087. The next prime is 1220414131. The reversal of 1220414121 is 1214140221.

It can be written as a sum of positive squares in only one way, i.e., 1151855721 + 68558400 = 33939^2 + 8280^2 .

It is not a de Polignac number, because 1220414121 - 2¹¹ = 1220412073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220414094 and 1220414103.

It is not an unprimeable number, because it can be changed into a prime (1220414131) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7533340 + ... + 7533501.

Almost surely, 2^1220414121 is an apocalyptic number.

It is an amenable number.

1220414121 is a deficient number, since it is larger than the sum of its proper divisors (602673761).

1220414121 is an equidigital number, since it uses as much as digits as its factorization.

1220414121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15066853 (or 15066844 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1220414121 is about 34934.4260150357. The cubic root of 1220414121 is about 1068.6506182751.

Adding to 1220414121 its reverse (1214140221), we get a palindrome (2434554342).

The spelling of 1220414121 in words is "one billion, two hundred twenty million, four hundred fourteen thousand, one hundred twenty-one".