1201212002021 has 8 divisors (see below), whose sum is σ = 1216156479744. Its totient is φ = 1186359490800.

The previous prime is 1201212001973. The next prime is 1201212002057. The reversal of 1201212002021 is 1202002121021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201212002021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201212001987 and 1201212002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201212002071) 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, 22965341 + ... + 23017586.

It is an arithmetic number, because the mean of its divisors is an integer number (152019559968).

Almost surely, 2^{1201212002021} is an apocalyptic number.

It is an amenable number.

1201212002021 is a deficient number, since it is larger than the sum of its proper divisors (14944477723).

1201212002021 is a wasteful number, since it uses less digits than its factorization.

1201212002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45983251.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1201212002021 its reverse (1202002121021), we get a palindrome (2403214123042).

The spelling of 1201212002021 in words is "one trillion, two hundred one billion, two hundred twelve million, two thousand, twenty-one".