211221002038 has 4 divisors (see below), whose sum is σ = 316831503060. Its totient is φ = 105610501018.

The previous prime is 211221001993. The next prime is 211221002039. The reversal of 211221002038 is 830200122112.

211221002038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×211221002038² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221002039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52805250508 + ... + 52805250511.

It is an arithmetic number, because the mean of its divisors is an integer number (79207875765).

Almost surely, 2^211221002038 is an apocalyptic number.

211221002038 is a deficient number, since it is larger than the sum of its proper divisors (105610501022).

211221002038 is a wasteful number, since it uses less digits than its factorization.

211221002038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105610501021.

The product of its (nonzero) digits is 384, while the sum is 22.

The spelling of 211221002038 in words is "two hundred eleven billion, two hundred twenty-one million, two thousand, thirty-eight".