1612102221 has 12 divisors (see below), whose sum is σ = 2331885660. Its totient is φ = 1073214720.

The previous prime is 1612102211. The next prime is 1612102237. The reversal of 1612102221 is 1222012161.

1612102221 is a `hidden beast` number, since 1 + 612 + 10 + 22 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 105575625 + 1506526596 = 10275^2 + 38814^2 .

It is not a de Polignac number, because 1612102221 - 2⁵ = 1612102189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1612102194 and 1612102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1612102201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119940 + ... + 132701.

It is an arithmetic number, because the mean of its divisors is an integer number (194323805).

Almost surely, 2^1612102221 is an apocalyptic number.

It is an amenable number.

1612102221 is a deficient number, since it is larger than the sum of its proper divisors (719783439).

1612102221 is a wasteful number, since it uses less digits than its factorization.

1612102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253356 (or 253353 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1612102221 is about 40150.9927772652. The cubic root of 1612102221 is about 1172.5486169969.

Adding to 1612102221 its reverse (1222012161), we get a palindrome (2834114382).

The spelling of 1612102221 in words is "one billion, six hundred twelve million, one hundred two thousand, two hundred twenty-one".