10121210211220 has 48 divisors (see below), whose sum is σ = 21300552322560. Its totient is φ = 4039721415296.

The previous prime is 10121210211209. The next prime is 10121210211221. The reversal of 10121210211220 is 2211201212101.

It is a super-2 number, since 2×10121210211220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10121210211194 and 10121210211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121210211221) 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, 155671239 + ... + 155736241.

It is an arithmetic number, because the mean of its divisors is an integer number (443761506720).

Almost surely, 2^{10121210211220} is an apocalyptic number.

10121210211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121210211220 is an abundant number, since it is smaller than the sum of its proper divisors (11179342111340).

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

10121210211220 is a wasteful number, since it uses less digits than its factorization.

10121210211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81744 (or 81742 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10121210211220 its reverse (2211201212101), we get a palindrome (12332411423321).

The spelling of 10121210211220 in words is "ten trillion, one hundred twenty-one billion, two hundred ten million, two hundred eleven thousand, two hundred twenty".