10121001211020 has 192 divisors, whose sum is σ = 32801193492480. Its totient is φ = 2283808220928.

The previous prime is 10121001211003. The next prime is 10121001211031. The reversal of 10121001211020 is 2011210012101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10121001210987 and 10121001211005.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 397715937 + ... + 397741383.

It is an arithmetic number, because the mean of its divisors is an integer number (170839549440).

Almost surely, 2^{10121001211020} is an apocalyptic number.

10121001211020 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 10121001211020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16400596746240).

10121001211020 is an abundant number, since it is smaller than the sum of its proper divisors (22680192281460).

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

10121001211020 is a wasteful number, since it uses less digits than its factorization.

10121001211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37532 (or 37530 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10121001211020 its reverse (2011210012101), we get a palindrome (12132211223121).

The spelling of 10121001211020 in words is "ten trillion, one hundred twenty-one billion, one million, two hundred eleven thousand, twenty".