10020121212 has 36 divisors (see below), whose sum is σ = 24441029480. Its totient is φ = 3194819232.

The previous prime is 10020121211. The next prime is 10020121213. The reversal of 10020121212 is 21212102001.

It is an interprime number because it is at equal distance from previous prime (10020121211) and next prime (10020121213).

It is a Harshad number since it is a multiple of its sum of digits (12).

10020121212 is a modest number, since divided by 121212 gives 10020 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020121211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 782887 + ... + 795582.

Almost surely, 2^10020121212 is an apocalyptic number.

10020121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10020121212 is an abundant number, since it is smaller than the sum of its proper divisors (14420908268).

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

10020121212 is a wasteful number, since it uses less digits than its factorization.

10020121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578522 (or 1578497 counting only the distinct ones).

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

Adding to 10020121212 its reverse (21212102001), we get a palindrome (31232223213).

The spelling of 10020121212 in words is "ten billion, twenty million, one hundred twenty-one thousand, two hundred twelve".