10202021101220 has 96 divisors (see below), whose sum is σ = 23438132355456. Its totient is φ = 3707269632000.

The previous prime is 10202021101211. The next prime is 10202021101231. The reversal of 10202021101220 is 2210112020201.

It is a junction number, because it is equal to n+sod(n) for n = 10202021101195 and 10202021101204.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18736820 + ... + 19273620.

It is an arithmetic number, because the mean of its divisors is an integer number (244147212036).

Almost surely, 2^{10202021101220} is an apocalyptic number.

10202021101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10202021101220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11719066177728).

10202021101220 is an abundant number, since it is smaller than the sum of its proper divisors (13236111254236).

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

10202021101220 is a wasteful number, since it uses less digits than its factorization.

10202021101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537981 (or 537979 counting only the distinct ones).

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

Adding to 10202021101220 its reverse (2210112020201), we get a palindrome (12412133121421).

The spelling of 10202021101220 in words is "ten trillion, two hundred two billion, twenty-one million, one hundred one thousand, two hundred twenty".