211421212042 has 8 divisors (see below), whose sum is σ = 319552672032. Its totient is φ = 104903654700.

The previous prime is 211421212033. The next prime is 211421212043. The reversal of 211421212042 is 240212124112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (211421212043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403475334 + ... + 403475857.

It is an arithmetic number, because the mean of its divisors is an integer number (39944084004).

Almost surely, 2^211421212042 is an apocalyptic number.

211421212042 is a deficient number, since it is larger than the sum of its proper divisors (108131459990).

211421212042 is a wasteful number, since it uses less digits than its factorization.

211421212042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806951324.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 211421212042 its reverse (240212124112), we get a palindrome (451633336154).

The spelling of 211421212042 in words is "two hundred eleven billion, four hundred twenty-one million, two hundred twelve thousand, forty-two".