100020000121210 has 16 divisors (see below), whose sum is σ = 193884923312136. Its totient is φ = 36930461583168.

The previous prime is 100020000121201. The next prime is 100020000121219. The reversal of 100020000121210 is 12121000020001.

It is an interprime number because it is at equal distance from previous prime (100020000121201) and next prime (100020000121219).

It can be written as a sum of positive squares in 4 ways, for example, as 71942474935881 + 28077525185329 = 8481891^2 + 5298823^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (100020000121219) 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, 384692308029 + ... + 384692308288.

Almost surely, 2^{100020000121210} is an apocalyptic number.

100020000121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100020000121210 is a deficient number, since it is larger than the sum of its proper divisors (93864923190926).

100020000121210 is a wasteful number, since it uses less digits than its factorization.

100020000121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769384616337.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100020000121210 its reverse (12121000020001), we get a palindrome (112141000141211).

The spelling of 100020000121210 in words is "one hundred trillion, twenty billion, one hundred twenty-one thousand, two hundred ten".