21232210202 has 32 divisors (see below), whose sum is σ = 37989955584. Its totient is φ = 8701743600.

The previous prime is 21232210157. The next prime is 21232210211. The reversal of 21232210202 is 20201223212.

It is a super-3 number, since 3×21232210202³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2575427 + ... + 2583657.

It is an arithmetic number, because the mean of its divisors is an integer number (1187186112).

Almost surely, 2^21232210202 is an apocalyptic number.

21232210202 is a deficient number, since it is larger than the sum of its proper divisors (16757745382).

21232210202 is a wasteful number, since it uses less digits than its factorization.

21232210202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16274.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21232210202 its reverse (20201223212), we get a palindrome (41433433414).

The spelling of 21232210202 in words is "twenty-one billion, two hundred thirty-two million, two hundred ten thousand, two hundred two".