212011121000 has 64 divisors (see below), whose sum is σ = 566978330880. Its totient is φ = 72689524800.

The previous prime is 212011120999. The next prime is 212011121011. The reversal of 212011121000 is 121110212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15136652 + ... + 15150651.

It is an arithmetic number, because the mean of its divisors is an integer number (8859036420).

Almost surely, 2^212011121000 is an apocalyptic number.

212011121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212011121000 is an abundant number, since it is smaller than the sum of its proper divisors (354967209880).

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

212011121000 is a wasteful number, since it uses less digits than its factorization.

212011121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30287331 (or 30287317 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212011121000 its reverse (121110212), we get a palindrome (212132231212).

The spelling of 212011121000 in words is "two hundred twelve billion, eleven million, one hundred twenty-one thousand".