100211210121020 has 24 divisors (see below), whose sum is σ = 210460467984144. Its totient is φ = 40081259909376.

The previous prime is 100211210120999. The next prime is 100211210121041. The reversal of 100211210121020 is 20121012112001.

It is an interprime number because it is at equal distance from previous prime (100211210120999) and next prime (100211210121041).

It is a junction number, because it is equal to n+sod(n) for n = 100211210120986 and 100211210121004.

It is a congruent number.

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, 201253814 + ... + 201751133.

It is an arithmetic number, because the mean of its divisors is an integer number (8769186166006).

Almost surely, 2^{100211210121020} is an apocalyptic number.

100211210121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100211210121020 is an abundant number, since it is smaller than the sum of its proper divisors (110249257863124).

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

100211210121020 is a wasteful number, since it uses less digits than its factorization.

100211210121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403017389 (or 403017387 counting only the distinct ones).

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

Adding to 100211210121020 its reverse (20121012112001), we get a palindrome (120332222233021).

The spelling of 100211210121020 in words is "one hundred trillion, two hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, twenty".