120021212 has 18 divisors (see below), whose sum is σ = 217038024. Its totient is φ = 58072920.

The previous prime is 120021211. The next prime is 120021257. The reversal of 120021212 is 212120021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 120021193 and 120021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11768 + ... + 19455.

It is an arithmetic number, because the mean of its divisors is an integer number (12057668).

Almost surely, 2^120021212 is an apocalyptic number.

It is an amenable number.

120021212 is a deficient number, since it is larger than the sum of its proper divisors (97016812).

120021212 is a wasteful number, since it uses less digits than its factorization.

120021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31289 (or 31256 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 120021212 is about 10955.4192982286. The cubic root of 120021212 is about 493.2714760930.

Adding to 120021212 its reverse (212120021), we get a palindrome (332141233).

It can be divided in two parts, 120021 and 212, that multiplied together give a palindrome (25444452).

The spelling of 120021212 in words is "one hundred twenty million, twenty-one thousand, two hundred twelve".