211222051142 has 8 divisors (see below), whose sum is σ = 317647558800. Its totient is φ = 105339531544.

The previous prime is 211222051099. The next prime is 211222051151. The reversal of 211222051142 is 241150222112.

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

It is a super-2 number, since 2×211222051142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135746042 + ... + 135747597.

It is an arithmetic number, because the mean of its divisors is an integer number (39705944850).

Almost surely, 2^211222051142 is an apocalyptic number.

211222051142 is a deficient number, since it is larger than the sum of its proper divisors (106425507658).

211222051142 is a wasteful number, since it uses less digits than its factorization.

211222051142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271494030.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 211222051142 its reverse (241150222112), we get a palindrome (452372273254).

The spelling of 211222051142 in words is "two hundred eleven billion, two hundred twenty-two million, fifty-one thousand, one hundred forty-two".