202272121 has 4 divisors (see below), whose sum is σ = 204236032. Its totient is φ = 200308212.

The previous prime is 202272101. The next prime is 202272127. The reversal of 202272121 is 121272202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202272121 - 2⁹ = 202271609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202272127) 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, 981801 + ... + 982006.

It is an arithmetic number, because the mean of its divisors is an integer number (51059008).

Almost surely, 2^202272121 is an apocalyptic number.

It is an amenable number.

202272121 is a deficient number, since it is larger than the sum of its proper divisors (1963911).

202272121 is a wasteful number, since it uses less digits than its factorization.

202272121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963910.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 202272121 is about 14222.2403650058. The cubic root of 202272121 is about 587.0097879102.

The spelling of 202272121 in words is "two hundred two million, two hundred seventy-two thousand, one hundred twenty-one".