1200101211021 has 8 divisors (see below), whose sum is σ = 1651752204544. Its totient is φ = 774258845760.

The previous prime is 1200101211019. The next prime is 1200101211037. The reversal of 1200101211021 is 1201121010021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200101211021 - 2¹ = 1200101211019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1200101210988 and 1200101211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200101211721) 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, 6452156956 + ... + 6452157141.

It is an arithmetic number, because the mean of its divisors is an integer number (206469025568).

Almost surely, 2^{1200101211021} is an apocalyptic number.

It is an amenable number.

1200101211021 is a deficient number, since it is larger than the sum of its proper divisors (451650993523).

1200101211021 is a wasteful number, since it uses less digits than its factorization.

1200101211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12904314131.

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

Adding to 1200101211021 its reverse (1201121010021), we get a palindrome (2401222221042).

The spelling of 1200101211021 in words is "one trillion, two hundred billion, one hundred one million, two hundred eleven thousand, twenty-one".