10021121102120 has 32 divisors (see below), whose sum is σ = 22586599693800. Its totient is φ = 4001501380608.

The previous prime is 10021121102107. The next prime is 10021121102123. The reversal of 10021121102120 is 2120112112001.

It can be written as a sum of positive squares in 4 ways, for example, as 9703636184356 + 317484917764 = 3115066^2 + 563458^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10021121102095 and 10021121102104.

It is not an unprimeable number, because it can be changed into a prime (10021121102123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217072265 + ... + 217118424.

Almost surely, 2^{10021121102120} is an apocalyptic number.

10021121102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021121102120 is an abundant number, since it is smaller than the sum of its proper divisors (12565478591680).

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

10021121102120 is a wasteful number, since it uses less digits than its factorization.

10021121102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434191277 (or 434191273 counting only the distinct ones).

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

Adding to 10021121102120 its reverse (2120112112001), we get a palindrome (12141233214121).

The spelling of 10021121102120 in words is "ten trillion, twenty-one billion, one hundred twenty-one million, one hundred two thousand, one hundred twenty".