211110021212 has 24 divisors (see below), whose sum is σ = 389046147840. Its totient is φ = 99958529520.

The previous prime is 211110021131. The next prime is 211110021223. The reversal of 211110021212 is 212120011112.

It is a super-2 number, since 2×211110021212² (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 7 ways as a sum of consecutive naturals, for example, 381614 + ... + 753557.

It is an arithmetic number, because the mean of its divisors is an integer number (16210256160).

Almost surely, 2^211110021212 is an apocalyptic number.

It is an amenable number.

211110021212 is a deficient number, since it is larger than the sum of its proper divisors (177936126628).

211110021212 is a wasteful number, since it uses less digits than its factorization.

211110021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137641 (or 1137639 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211110021212 its reverse (212120011112), we get a palindrome (423230032324).

It can be divided in two parts, 2111100 and 21212, that added together give a palindrome (2132312).

The spelling of 211110021212 in words is "two hundred eleven billion, one hundred ten million, twenty-one thousand, two hundred twelve".