1021212010220 has 24 divisors (see below), whose sum is σ = 2144581914384. Its totient is φ = 408477814976.

The previous prime is 1021212010213. The next prime is 1021212010243. The reversal of 1021212010220 is 220102121201.

It is a junction number, because it is equal to n+sod(n) for n = 1021212010195 and 1021212010204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854414 + ... + 1665066.

It is an arithmetic number, because the mean of its divisors is an integer number (89357579766).

Almost surely, 2^{1021212010220} is an apocalyptic number.

1021212010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021212010220 is an abundant number, since it is smaller than the sum of its proper divisors (1123369904164).

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

1021212010220 is a wasteful number, since it uses less digits than its factorization.

1021212010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873649 (or 873647 counting only the distinct ones).

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

Adding to 1021212010220 its reverse (220102121201), we get a palindrome (1241314131421).

The spelling of 1021212010220 in words is "one trillion, twenty-one billion, two hundred twelve million, ten thousand, two hundred twenty".