211220303242 has 32 divisors (see below), whose sum is σ = 348611687424. Its totient is φ = 95385988800.

The previous prime is 211220303227. The next prime is 211220303249. The reversal of 211220303242 is 242303022112.

It is a super-2 number, since 2×211220303242² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211220303249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45708 + ... + 651559.

It is an arithmetic number, because the mean of its divisors is an integer number (10894115232).

Almost surely, 2^211220303242 is an apocalyptic number.

211220303242 is a deficient number, since it is larger than the sum of its proper divisors (137391384182).

211220303242 is a wasteful number, since it uses less digits than its factorization.

211220303242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697534.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 211220303242 its reverse (242303022112), we get a palindrome (453523325354).

The spelling of 211220303242 in words is "two hundred eleven billion, two hundred twenty million, three hundred three thousand, two hundred forty-two".