1000212101220 has 48 divisors (see below), whose sum is σ = 2865723981120. Its totient is φ = 260520360576.

The previous prime is 1000212101153. The next prime is 1000212101233. The reversal of 1000212101220 is 221012120001.

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

It is a junction number, because it is equal to n+sod(n) for n = 1000212101196 and 1000212101205.

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, 193836975 + ... + 193842134.

It is an arithmetic number, because the mean of its divisors is an integer number (59702582940).

Almost surely, 2^{1000212101220} is an apocalyptic number.

1000212101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000212101220 is an abundant number, since it is smaller than the sum of its proper divisors (1865511879900).

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

1000212101220 is a wasteful number, since it uses less digits than its factorization.

1000212101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387679164 (or 387679162 counting only the distinct ones).

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

Adding to 1000212101220 its reverse (221012120001), we get a palindrome (1221224221221).

The spelling of 1000212101220 in words is "one trillion, two hundred twelve million, one hundred one thousand, two hundred twenty".