1010221172 has 12 divisors (see below), whose sum is σ = 1781383296. Its totient is φ = 501254520.

The previous prime is 1010221171. The next prime is 1010221189. The reversal of 1010221172 is 2711220101.

It is a self number, because there is not a number n which added to its sum of digits gives 1010221172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010221171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963428 + ... + 964475.

It is an arithmetic number, because the mean of its divisors is an integer number (148448608).

Almost surely, 2^1010221172 is an apocalyptic number.

It is an amenable number.

1010221172 is a deficient number, since it is larger than the sum of its proper divisors (771162124).

1010221172 is a wasteful number, since it uses less digits than its factorization.

1010221172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928038 (or 1928036 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 1010221172 is about 31783.9766549121. The cubic root of 1010221172 is about 1003.3955147633.

Adding to 1010221172 its reverse (2711220101), we get a palindrome (3721441273).

The spelling of 1010221172 in words is "one billion, ten million, two hundred twenty-one thousand, one hundred seventy-two".