2101221202 has 4 divisors (see below), whose sum is σ = 3151831806. Its totient is φ = 1050610600.

The previous prime is 2101221193. The next prime is 2101221247. The reversal of 2101221202 is 2021221012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1685020401 + 416200801 = 41049^2 + 20401^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525305299 + ... + 525305302.

Almost surely, 2^2101221202 is an apocalyptic number.

2101221202 is a deficient number, since it is larger than the sum of its proper divisors (1050610604).

2101221202 is a wasteful number, since it uses less digits than its factorization.

2101221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050610603.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2101221202 is about 45839.0794192030. The cubic root of 2101221202 is about 1280.8273463838.

Adding to 2101221202 its reverse (2021221012), we get a palindrome (4122442214).

The spelling of 2101221202 in words is "two billion, one hundred one million, two hundred twenty-one thousand, two hundred two".