30202121012131 has 4 divisors (see below), whose sum is σ = 30469396419432. Its totient is φ = 29934845604832.

The previous prime is 30202121012069. The next prime is 30202121012149. The reversal of 30202121012131 is 13121012120203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30202121012131 - 2¹⁵ = 30202120979363 is a prime.

It is a super-2 number, since 2×30202121012131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30202121012099 and 30202121012108.

It is not an unprimeable number, because it can be changed into a prime (30202121012171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133637703481 + ... + 133637703706.

It is an arithmetic number, because the mean of its divisors is an integer number (7617349104858).

Almost surely, 2^{30202121012131} is an apocalyptic number.

30202121012131 is a deficient number, since it is larger than the sum of its proper divisors (267275407301).

30202121012131 is a wasteful number, since it uses less digits than its factorization.

30202121012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267275407300.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 30202121012131 its reverse (13121012120203), we get a palindrome (43323133132334).

The spelling of 30202121012131 in words is "thirty trillion, two hundred two billion, one hundred twenty-one million, twelve thousand, one hundred thirty-one".