211121111022000 has 160 divisors (see below), whose sum is σ = 689978497091520. Its totient is φ = 55527744153600.

The previous prime is 211121111021959. The next prime is 211121111022007. The reversal of 211121111022000 is 220111121112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (211121111022007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240567835 + ... + 241443834.

It is an arithmetic number, because the mean of its divisors is an integer number (4312365606822).

Almost surely, 2^{211121111022000} is an apocalyptic number.

211121111022000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211121111022000 is an abundant number, since it is smaller than the sum of its proper divisors (478857386069520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211121111022000 is a wasteful number, since it uses less digits than its factorization.

211121111022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482011768 (or 482011752 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211121111022000 its reverse (220111121112), we get a palindrome (211341222143112).

The spelling of 211121111022000 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred eleven million, twenty-two thousand".