2120121021222 has 32 divisors (see below), whose sum is σ = 4711434910560. Its totient is φ = 706698777600.

The previous prime is 2120121021197. The next prime is 2120121021229. The reversal of 2120121021222 is 2221201210212.

It is a happy number.

2120121021222 is a `hidden beast` number, since 21 + 201 + 210 + 212 + 22 = 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 = 2120121021195 and 2120121021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120121021229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6017158 + ... + 6359750.

It is an arithmetic number, because the mean of its divisors is an integer number (147232340955).

Almost surely, 2^{2120121021222} is an apocalyptic number.

2120121021222 is an abundant number, since it is smaller than the sum of its proper divisors (2591313889338).

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

2120121021222 is a wasteful number, since it uses less digits than its factorization.

2120121021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457205 (or 457199 counting only the distinct ones).

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

Adding to 2120121021222 its reverse (2221201210212), we get a palindrome (4341322231434).

It can be divided in two parts, 21201210212 and 22, that multiplied together give a palindrome (466426624664).

The spelling of 2120121021222 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, two hundred twenty-two".