1021201212 has 12 divisors (see below), whose sum is σ = 2382802856. Its totient is φ = 340400400.

The previous prime is 1021201201. The next prime is 1021201217. The reversal of 1021201212 is 2121021201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 85100101 = 1021201212 / (1 + 0 + 2 + 1 + 2 + 0 + 1 + 2 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021201217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42550039 + ... + 42550062.

Almost surely, 2^1021201212 is an apocalyptic number.

1021201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021201212 is an abundant number, since it is smaller than the sum of its proper divisors (1361601644).

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

1021201212 is a wasteful number, since it uses less digits than its factorization.

1021201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85100108 (or 85100106 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1021201212 is about 31956.2390152533. The cubic root of 1021201212 is about 1007.0177072485.

Adding to 1021201212 its reverse (2121021201), we get a palindrome (3142222413).

It can be divided in two parts, 1021201 and 212, that multiplied together give a palindrome (216494612).

The spelling of 1021201212 in words is "one billion, twenty-one million, two hundred one thousand, two hundred twelve".