212001011020 has 48 divisors (see below), whose sum is σ = 449889914880. Its totient is φ = 83909352384.

The previous prime is 212001010999. The next prime is 212001011111. The reversal of 212001011020 is 20110100212.

It is a super-2 number, since 2×212001011020² (a number of 23 digits) contains 22 as substring.

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 = 212001010988 and 212001011006.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1780597 + ... + 1895923.

It is an arithmetic number, because the mean of its divisors is an integer number (9372706560).

Almost surely, 2^212001011020 is an apocalyptic number.

212001011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212001011020 is an abundant number, since it is smaller than the sum of its proper divisors (237888903860).

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

212001011020 is a wasteful number, since it uses less digits than its factorization.

212001011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116302 (or 116300 counting only the distinct ones).

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

Adding to 212001011020 its reverse (20110100212), we get a palindrome (232111111232).

The spelling of 212001011020 in words is "two hundred twelve billion, one million, eleven thousand, twenty".