211101022121012 has 12 divisors (see below), whose sum is σ = 369583924750656. Its totient is φ = 105505615049400.

The previous prime is 211101022120987. The next prime is 211101022121029. The reversal of 211101022121012 is 210121220101112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11223992198 + ... + 11224011005.

It is an arithmetic number, because the mean of its divisors is an integer number (30798660395888).

Almost surely, 2^{211101022121012} is an apocalyptic number.

It is an amenable number.

211101022121012 is a deficient number, since it is larger than the sum of its proper divisors (158482902629644).

211101022121012 is a wasteful number, since it uses less digits than its factorization.

211101022121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22448005558 (or 22448005556 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211101022121012 its reverse (210121220101112), we get a palindrome (421222242222124).

The spelling of 211101022121012 in words is "two hundred eleven trillion, one hundred one billion, twenty-two million, one hundred twenty-one thousand, twelve".