2120021211021 has 8 divisors (see below), whose sum is σ = 3230508512064. Its totient is φ = 1211440692000.

The previous prime is 2120021210963. The next prime is 2120021211083. The reversal of 2120021211021 is 1201121200212.

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

It is not a de Polignac number, because 2120021211021 - 2¹⁰ = 2120021209997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120021211521) 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, 50476695480 + ... + 50476695521.

It is an arithmetic number, because the mean of its divisors is an integer number (403813564008).

Almost surely, 2^{2120021211021} is an apocalyptic number.

2120021211021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2120021211021 is a deficient number, since it is larger than the sum of its proper divisors (1110487301043).

2120021211021 is a wasteful number, since it uses less digits than its factorization.

2120021211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100953391011.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2120021211021 its reverse (1201121200212), we get a palindrome (3321142411233).

The spelling of 2120021211021 in words is "two trillion, one hundred twenty billion, twenty-one million, two hundred eleven thousand, twenty-one".