10212121110020 has 48 divisors (see below), whose sum is σ = 21772227738240. Its totient is φ = 4022643381504.

The previous prime is 10212121109977. The next prime is 10212121110043. The reversal of 10212121110020 is 2001112121201.

It is a super-2 number, since 2×10212121110020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10212121109977 and 10212121110004.

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, 3194441 + ... + 5534319.

It is an arithmetic number, because the mean of its divisors is an integer number (453588077880).

Almost surely, 2^{10212121110020} is an apocalyptic number.

10212121110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212121110020 is an abundant number, since it is smaller than the sum of its proper divisors (11560106628220).

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

10212121110020 is a wasteful number, since it uses less digits than its factorization.

10212121110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343212 (or 2343210 counting only the distinct ones).

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

Adding to 10212121110020 its reverse (2001112121201), we get a palindrome (12213233231221).

The spelling of 10212121110020 in words is "ten trillion, two hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, twenty".