1021220101210 has 16 divisors (see below), whose sum is σ = 1897492833792. Its totient is φ = 395311006800.

The previous prime is 1021220101199. The next prime is 1021220101219. The reversal of 1021220101210 is 121010221201.

It is not an unprimeable number, because it can be changed into a prime (1021220101219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1647128886 + ... + 1647129505.

It is an arithmetic number, because the mean of its divisors is an integer number (118593302112).

Almost surely, 2^{1021220101210} is an apocalyptic number.

1021220101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021220101210 is a deficient number, since it is larger than the sum of its proper divisors (876272732582).

1021220101210 is a wasteful number, since it uses less digits than its factorization.

1021220101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3294258429.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021220101210 its reverse (121010221201), we get a palindrome (1142230322411).

The spelling of 1021220101210 in words is "one trillion, twenty-one billion, two hundred twenty million, one hundred one thousand, two hundred ten".