212010101020 has 12 divisors (see below), whose sum is σ = 445221212184. Its totient is φ = 84804040400.

The previous prime is 212010100999. The next prime is 212010101057. The reversal of 212010101020 is 20101010212.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 212010100988 and 212010101006.

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, 5300252506 + ... + 5300252545.

It is an arithmetic number, because the mean of its divisors is an integer number (37101767682).

Almost surely, 2^212010101020 is an apocalyptic number.

212010101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212010101020 is an abundant number, since it is smaller than the sum of its proper divisors (233211111164).

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

212010101020 is a wasteful number, since it uses less digits than its factorization.

212010101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600505060 (or 10600505058 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 212010101020 its reverse (20101010212), we get a palindrome (232111111232).

The spelling of 212010101020 in words is "two hundred twelve billion, ten million, one hundred one thousand, twenty".