211142320042 has 32 divisors (see below), whose sum is σ = 330977041920. Its totient is φ = 100901760960.

The previous prime is 211142320021. The next prime is 211142320057. The reversal of 211142320042 is 240023241112.

It is a junction number, because it is equal to n+sod(n) for n = 211142319995 and 211142320022.

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, 24351684 + ... + 24360352.

It is an arithmetic number, because the mean of its divisors is an integer number (10343032560).

Almost surely, 2^211142320042 is an apocalyptic number.

211142320042 is a deficient number, since it is larger than the sum of its proper divisors (119834721878).

211142320042 is a wasteful number, since it uses less digits than its factorization.

211142320042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13518.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 211142320042 its reverse (240023241112), we get a palindrome (451165561154).

The spelling of 211142320042 in words is "two hundred eleven billion, one hundred forty-two million, three hundred twenty thousand, forty-two".