1023121212 has 12 divisors (see below), whose sum is σ = 2387282856. Its totient is φ = 341040400.

The previous prime is 1023121201. The next prime is 1023121237. The reversal of 1023121212 is 2121213201.

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

It is a junction number, because it is equal to n+sod(n) for n = 1023121191 and 1023121200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42630039 + ... + 42630062.

It is an arithmetic number, because the mean of its divisors is an integer number (198940238).

Almost surely, 2^1023121212 is an apocalyptic number.

1023121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1023121212 is an abundant number, since it is smaller than the sum of its proper divisors (1364161644).

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

1023121212 is a wasteful number, since it uses less digits than its factorization.

1023121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85260108 (or 85260106 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1023121212 is about 31986.2659902653. The cubic root of 1023121212 is about 1007.6484231499.

Adding to 1023121212 its reverse (2121213201), we get a palindrome (3144334413).

The spelling of 1023121212 in words is "one billion, twenty-three million, one hundred twenty-one thousand, two hundred twelve".