10121122220 has 48 divisors (see below), whose sum is σ = 23208450048. Its totient is φ = 3676935360.

The previous prime is 10121122213. The next prime is 10121122223. The reversal of 10121122220 is 2222112101.

It is a super-2 number, since 2×10121122220² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10121122195 and 10121122204.

It is not an unprimeable number, because it can be changed into a prime (10121122223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217979 + ... + 260301.

It is an arithmetic number, because the mean of its divisors is an integer number (483509376).

Almost surely, 2^10121122220 is an apocalyptic number.

10121122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121122220 is an abundant number, since it is smaller than the sum of its proper divisors (13087327828).

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

10121122220 is a wasteful number, since it uses less digits than its factorization.

10121122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43430 (or 43428 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10121122220 its reverse (2222112101), we get a palindrome (12343234321).

The spelling of 10121122220 in words is "ten billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty".