212001121210122 has 96 divisors (see below), whose sum is σ = 493464709820160. Its totient is φ = 65606877262080.

The previous prime is 212001121210111. The next prime is 212001121210139. The reversal of 212001121210122 is 221012121100212.

212001121210122 is a `hidden beast` number, since 21 + 200 + 112 + 1 + 210 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212001121210095 and 212001121210104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10654254 + ... + 23184377.

It is an arithmetic number, because the mean of its divisors is an integer number (5140257393960).

Almost surely, 2^{212001121210122} is an apocalyptic number.

212001121210122 is an abundant number, since it is smaller than the sum of its proper divisors (281463588610038).

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

212001121210122 is a wasteful number, since it uses less digits than its factorization.

212001121210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33839108 (or 33839105 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212001121210122 its reverse (221012121100212), we get a palindrome (433013242310334).

The spelling of 212001121210122 in words is "two hundred twelve trillion, one billion, one hundred twenty-one million, two hundred ten thousand, one hundred twenty-two".