10212111001220 has 48 divisors (see below), whose sum is σ = 23555624480640. Its totient is φ = 3701598126336.

The previous prime is 10212111001199. The next prime is 10212111001249. The reversal of 10212111001220 is 2210011121201.

It is a super-2 number, since 2×10212111001220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10212111001195 and 10212111001204.

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, 584208137 + ... + 584225616.

It is an arithmetic number, because the mean of its divisors is an integer number (490742176680).

Almost surely, 2^{10212111001220} is an apocalyptic number.

10212111001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212111001220 is an abundant number, since it is smaller than the sum of its proper divisors (13343513479420).

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

10212111001220 is a wasteful number, since it uses less digits than its factorization.

10212111001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168433804 (or 1168433802 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10212111001220 its reverse (2210011121201), we get a palindrome (12422122122421).

The spelling of 10212111001220 in words is "ten trillion, two hundred twelve billion, one hundred eleven million, one thousand, two hundred twenty".