211121220022002 has 24 divisors (see below), whose sum is σ = 457429577184684. Its totient is φ = 70373698909344.

The previous prime is 211121220021889. The next prime is 211121220022039. The reversal of 211121220022002 is 200220022121112.

It is a happy number.

211121220022002 is a `hidden beast` number, since 21 + 11 + 212 + 200 + 220 + 0 + 2 = 666.

211121220022002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 211035791839041 + 85428182961 = 14527071^2 + 292281^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59510928 + ... + 62958660.

Almost surely, 2^{211121220022002} is an apocalyptic number.

211121220022002 is an abundant number, since it is smaller than the sum of its proper divisors (246308357162682).

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

211121220022002 is a wasteful number, since it uses less digits than its factorization.

211121220022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6849674 (or 6849671 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211121220022002 its reverse (200220022121112), we get a palindrome (411341242143114).

The spelling of 211121220022002 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twenty million, twenty-two thousand, two".