211021221202 has 16 divisors (see below), whose sum is σ = 350968233024. Its totient is φ = 94346298000.

The previous prime is 211021221163. The next prime is 211021221211. The reversal of 211021221202 is 202122120112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78620574 + ... + 78623257.

It is an arithmetic number, because the mean of its divisors is an integer number (21935514564).

Almost surely, 2^211021221202 is an apocalyptic number.

211021221202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211021221202 is a deficient number, since it is larger than the sum of its proper divisors (139947011822).

211021221202 is a wasteful number, since it uses less digits than its factorization.

211021221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157243905.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211021221202 its reverse (202122120112), we get a palindrome (413143341314).

The spelling of 211021221202 in words is "two hundred eleven billion, twenty-one million, two hundred twenty-one thousand, two hundred two".